2157716 has 48 divisors (see below), whose sum is σ = 4536000. Its totient is φ = 887040.

The previous prime is 2157709. The next prime is 2157721. The reversal of 2157716 is 6177512.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24200 + ... + 24288.

It is an arithmetic number, because the mean of its divisors is an integer number (94500).

2^2157716 is an apocalyptic number.

It is an amenable number.

2157716 is an abundant number, since it is smaller than the sum of its proper divisors (2378284).

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

2157716 is a wasteful number, since it uses less digits than its factorization.

2157716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 150 counting only the distinct ones).

The product of its digits is 2940, while the sum is 29.

The square root of 2157716 is about 1468.9166075717. The cubic root of 2157716 is about 129.2205030292.

The spelling of 2157716 in words is "two million, one hundred fifty-seven thousand, seven hundred sixteen".