2156662000 has 40 divisors (see below), whose sum is σ = 5214813552. Its totient is φ = 862664000.

The previous prime is 2156661977. The next prime is 2156662003. The reversal of 2156662000 is 2666512.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2156662000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156662003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537166 + ... + 541165.

Almost surely, 2^2156662000 is an apocalyptic number.

2156662000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156662000 is an abundant number, since it is smaller than the sum of its proper divisors (3058151552).

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

2156662000 is a wasteful number, since it uses less digits than its factorization.

2156662000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078354 (or 1078338 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2156662000 is about 46439.8751074979. The cubic root of 2156662000 is about 1291.9945908070.

The spelling of 2156662000 in words is "two billion, one hundred fifty-six million, six hundred sixty-two thousand".