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15305052416 = 2879775013
BaseRepresentation
bin11100100000100000…
…01001000100000000
31110111122011012221012
432100100021010000
5222321043134131
611010412220052
71051162541033
oct162020110400
943448135835
1015305052416
116544337455
122b7176a628
13159bac5744
14a5295101a
155e89c052b
hex390409100

15305052416 has 36 divisors (see below), whose sum is σ = 30589058892. Its totient is φ = 7642822656.

The previous prime is 15305052379. The next prime is 15305052419. The reversal of 15305052416 is 61425050351.

It can be written as a sum of positive squares in 2 ways, for example, as 12033212416 + 3271840000 = 109696^2 + 57200^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (15305052419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166526 + ... + 241538.

Almost surely, 215305052416 is an apocalyptic number.

15305052416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15305052416 is a deficient number, since it is larger than the sum of its proper divisors (15284006476).

15305052416 is an frugal number, since it uses more digits than its factorization.

15305052416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75826 (or 75812 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 15305052416 in words is "fifteen billion, three hundred five million, fifty-two thousand, four hundred sixteen".

Divisors: 1 2 4 8 16 32 64 128 256 797 1594 3188 6376 12752 25504 51008 75013 102016 150026 204032 300052 600104 1200208 2400416 4800832 9601664 19203328 59785361 119570722 239141444 478282888 956565776 1913131552 3826263104 7652526208 15305052416