15256104220 has 48 divisors (see below), whose sum is σ = 36639203328. Its totient is φ = 5227156800.

The previous prime is 15256104173. The next prime is 15256104221. The reversal of 15256104220 is 2240165251.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15256104221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177445 + ... + 248995.

It is an arithmetic number, because the mean of its divisors is an integer number (763316736).

Almost surely, 2^15256104220 is an apocalyptic number.

15256104220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15256104220 is an abundant number, since it is smaller than the sum of its proper divisors (21383099108).

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

15256104220 is a wasteful number, since it uses less digits than its factorization.

15256104220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73090 (or 73088 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 15256104220 its reverse (2240165251), we get a palindrome (17496269471).

The spelling of 15256104220 in words is "fifteen billion, two hundred fifty-six million, one hundred four thousand, two hundred twenty".