1902172 has 12 divisors (see below), whose sum is σ = 3341800. Its totient is φ = 947376.

The previous prime is 1902157. The next prime is 1902193. The reversal of 1902172 is 2712091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454 + ... + 2002.

2^1902172 is an apocalyptic number.

It is an amenable number.

1902172 is a deficient number, since it is larger than the sum of its proper divisors (1439628).

1902172 is a wasteful number, since it uses less digits than its factorization.

1902172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1858 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1902172 is about 1379.1925173811. The cubic root of 1902172 is about 123.9034107339.

The spelling of 1902172 in words is "one million, nine hundred two thousand, one hundred seventy-two".