2157498 has 24 divisors (see below), whose sum is σ = 5342688. Its totient is φ = 616392.

The previous prime is 2157481. The next prime is 2157499. The reversal of 2157498 is 8947512.

It is not an unprimeable number, because it can be changed into a prime (2157499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8436 + ... + 8687.

It is an arithmetic number, because the mean of its divisors is an integer number (222612).

2^2157498 is an apocalyptic number.

2157498 is an abundant number, since it is smaller than the sum of its proper divisors (3185190).

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

2157498 is a wasteful number, since it uses less digits than its factorization.

2157498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17138 (or 17135 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 2157498 is about 1468.8424013488. The cubic root of 2157498 is about 129.2161510480.

The spelling of 2157498 in words is "two million, one hundred fifty-seven thousand, four hundred ninety-eight".