2157492320 has 48 divisors (see below), whose sum is σ = 5215628880. Its totient is φ = 842924544.

The previous prime is 2157492301. The next prime is 2157492341. The reversal of 2157492320 is 232947512.

It is a happy number.

2157492320 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2157492320² = 9309546221717964800, which contains 22 as substring.

It is a congruent number.

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, 149915 + ... + 163674.

It is an arithmetic number, because the mean of its divisors is an integer number (108658935).

Almost surely, 2^2157492320 is an apocalyptic number.

2157492320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157492320 is an abundant number, since it is smaller than the sum of its proper divisors (3058136560).

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

2157492320 is a wasteful number, since it uses less digits than its factorization.

2157492320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313647 (or 313639 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2157492320 is about 46448.8139783999. The cubic root of 2157492320 is about 1292.1603765298.

The spelling of 2157492320 in words is "two billion, one hundred fifty-seven million, four hundred ninety-two thousand, three hundred twenty".