2172900 has 36 divisors (see below), whose sum is σ = 6287792. Its totient is φ = 579360.

The previous prime is 2172893. The next prime is 2172901. The reversal of 2172900 is 92712.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2172901) 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, 3322 + ... + 3921.

2^2172900 is an apocalyptic number.

2172900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172900 is an abundant number, since it is smaller than the sum of its proper divisors (4114892).

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

2172900 is a wasteful number, since it uses less digits than its factorization.

2172900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7260 (or 7253 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 2172900 is about 1474.0759817594. The cubic root of 2172900 is about 129.5229060618.

The spelling of 2172900 in words is "two million, one hundred seventy-two thousand, nine hundred".