2157396 has 48 divisors (see below), whose sum is σ = 5337024. Its totient is φ = 677376.

The previous prime is 2157391. The next prime is 2157401. The reversal of 2157396 is 6937512.

It is an interprime number because it is at equal distance from previous prime (2157391) and next prime (2157401).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157391) 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, 19036 + ... + 19148.

It is an arithmetic number, because the mean of its divisors is an integer number (111188).

2^2157396 is an apocalyptic number.

It is an amenable number.

2157396 is an abundant number, since it is smaller than the sum of its proper divisors (3179628).

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

2157396 is a wasteful number, since it uses less digits than its factorization.

2157396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 198 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 2157396 is about 1468.8076797185. The cubic root of 2157396 is about 129.2141146992.

The spelling of 2157396 in words is "two million, one hundred fifty-seven thousand, three hundred ninety-six".