Search a number
-
+
1339395930 = 232537402221
BaseRepresentation
bin100111111010101…
…1000111101011010
310110100022100210200
41033311120331122
510220341132210
6340523523030
745122451255
oct11765307532
93410270720
101339395930
11628065a94
12314689476
1318464c892
14c9c5809c
157c8c30c0
hex4fd58f5a

1339395930 has 48 divisors (see below), whose sum is σ = 3576558024. Its totient is φ = 347518080.

The previous prime is 1339395917. The next prime is 1339395947. The reversal of 1339395930 is 395939331.

It can be written as a sum of positive squares in 4 ways, for example, as 1321831449 + 17564481 = 36357^2 + 4191^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197781 + ... + 204440.

Almost surely, 21339395930 is an apocalyptic number.

1339395930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1339395930 is an abundant number, since it is smaller than the sum of its proper divisors (2237162094).

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

1339395930 is a wasteful number, since it uses less digits than its factorization.

1339395930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402271 (or 402268 counting only the distinct ones).

The product of its (nonzero) digits is 295245, while the sum is 45.

The square root of 1339395930 is about 36597.7585379214. The cubic root of 1339395930 is about 1102.3080820395.

The spelling of 1339395930 in words is "one billion, three hundred thirty-nine million, three hundred ninety-five thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 37 45 74 90 111 185 222 333 370 555 666 1110 1665 3330 402221 804442 1206663 2011105 2413326 3619989 4022210 6033315 7239978 12066630 14882177 18099945 29764354 36199890 44646531 74410885 89293062 133939593 148821770 223232655 267879186 446465310 669697965 1339395930