13497428520 has 320 divisors, whose sum is σ = 47619095040. Its totient is φ = 3424550400.

The previous prime is 13497428509. The next prime is 13497428531. The reversal of 13497428520 is 2582479431.

13497428520 is a `hidden beast` number, since 1 + 34 + 9 + 74 + 28 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (13497428509) and next prime (13497428531).

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6125739 + ... + 6127941.

It is an arithmetic number, because the mean of its divisors is an integer number (148809672).

Almost surely, 2^13497428520 is an apocalyptic number.

13497428520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13497428520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23809547520).

13497428520 is an abundant number, since it is smaller than the sum of its proper divisors (34121666520).

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

13497428520 is a wasteful number, since it uses less digits than its factorization.

13497428520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 13497428520 in words is "thirteen billion, four hundred ninety-seven million, four hundred twenty-eight thousand, five hundred twenty".