2157234260 has 24 divisors (see below), whose sum is σ = 4571757960. Its totient is φ = 854976384.

The previous prime is 2157234257. The next prime is 2157234301. The reversal of 2157234260 is 624327512.

It can be written as a sum of positive squares in 4 ways, for example, as 1059372304 + 1097861956 = 32548^2 + 33134^2 .

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, 492599 + ... + 496958.

It is an arithmetic number, because the mean of its divisors is an integer number (190489915).

Almost surely, 2^2157234260 is an apocalyptic number.

2157234260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157234260 is an abundant number, since it is smaller than the sum of its proper divisors (2414523700).

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

2157234260 is a wasteful number, since it uses less digits than its factorization.

2157234260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989675 (or 989673 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 2157234260 is about 46446.0359987803. The cubic root of 2157234260 is about 1292.1088555735.

The spelling of 2157234260 in words is "two billion, one hundred fifty-seven million, two hundred thirty-four thousand, two hundred sixty".