2153688 has 32 divisors (see below), whose sum is σ = 5668800. Its totient is φ = 679968.

The previous prime is 2153647. The next prime is 2153693. The reversal of 2153688 is 8863512.

It is a happy number.

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, 1906 + ... + 2817.

It is an arithmetic number, because the mean of its divisors is an integer number (177150).

2^2153688 is an apocalyptic number.

It is an amenable number.

2153688 is an abundant number, since it is smaller than the sum of its proper divisors (3515112).

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

2153688 is a wasteful number, since it uses less digits than its factorization.

2153688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751 (or 4747 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 2153688 is about 1467.5448885809. The cubic root of 2153688 is about 129.1400438136.

The spelling of 2153688 in words is "two million, one hundred fifty-three thousand, six hundred eighty-eight".