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16023930 = 23513181227
BaseRepresentation
bin111101001000…
…000101111010
31010011002200220
4331020011322
513100231210
61331240510
7253125666
oct75100572
933132626
1016023930
11905501a
125449136
133420720
1421b18a6
151617c70
hexf4817a

16023930 has 64 divisors (see below), whose sum is σ = 41827968. Its totient is φ = 3905280.

The previous prime is 16023881. The next prime is 16023937. The reversal of 16023930 is 3932061.

16023930 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16023930.

It is not an unprimeable number, because it can be changed into a prime (16023937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70477 + ... + 70703.

It is an arithmetic number, because the mean of its divisors is an integer number (653562).

Almost surely, 216023930 is an apocalyptic number.

16023930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16023930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20913984).

16023930 is an abundant number, since it is smaller than the sum of its proper divisors (25804038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16023930 is a wasteful number, since it uses less digits than its factorization.

16023930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 16023930 is about 4002.9901323885. The cubic root of 16023930 is about 252.1097720299.

Adding to 16023930 its reverse (3932061), we get a palindrome (19955991).

It can be divided in two parts, 160 and 23930, that added together give a triangular number (24090 = T219).

The spelling of 16023930 in words is "sixteen million, twenty-three thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 181 195 227 362 390 454 543 681 905 1086 1135 1362 1810 2270 2353 2715 2951 3405 4706 5430 5902 6810 7059 8853 11765 14118 14755 17706 23530 29510 35295 41087 44265 70590 82174 88530 123261 205435 246522 410870 534131 616305 1068262 1232610 1602393 2670655 3204786 5341310 8011965 16023930