15492138400 has 72 divisors (see below), whose sum is σ = 39040251264. Its totient is φ = 5996947200.

The previous prime is 15492138377. The next prime is 15492138407. The reversal of 15492138400 is 483129451.

15492138400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15492138400.

It is not an unprimeable number, because it can be changed into a prime (15492138407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287542 + ... + 337141.

It is an arithmetic number, because the mean of its divisors is an integer number (542225712).

Almost surely, 2^15492138400 is an apocalyptic number.

15492138400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15492138400 is an abundant number, since it is smaller than the sum of its proper divisors (23548112864).

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

15492138400 is a wasteful number, since it uses less digits than its factorization.

15492138400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624734 (or 624721 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 15492138400 in words is "fifteen billion, four hundred ninety-two million, one hundred thirty-eight thousand, four hundred".