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16148308420 = 2251289626389
BaseRepresentation
bin11110000101000001…
…11010000111000100
31112200101220001201001
433002200322013010
5231032431332140
611230214143044
71111112233246
oct170240720704
945611801631
1016148308420
116937332142
123168051a84
1316a47121aa
14ad293a096
15647a3de9a
hex3c283a1c4

16148308420 has 24 divisors (see below), whose sum is σ = 33937810200. Its totient is φ = 6454301952.

The previous prime is 16148308403. The next prime is 16148308489. The reversal of 16148308420 is 2480384161.

It can be written as a sum of positive squares in 4 ways, for example, as 5900390596 + 10247917824 = 76814^2 + 101232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16148308420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287415 + ... + 338974.

It is an arithmetic number, because the mean of its divisors is an integer number (1414075425).

Almost surely, 216148308420 is an apocalyptic number.

16148308420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16148308420 is an abundant number, since it is smaller than the sum of its proper divisors (17789501780).

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

16148308420 is a wasteful number, since it uses less digits than its factorization.

16148308420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627687 (or 627685 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 16148308420 in words is "sixteen billion, one hundred forty-eight million, three hundred eight thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 1289 2578 5156 6445 12890 25780 626389 1252778 2505556 3131945 6263890 12527780 807415421 1614830842 3229661684 4037077105 8074154210 16148308420