20170372 has 12 divisors (see below), whose sum is σ = 35338240. Its totient is φ = 10073736.

The previous prime is 20170363. The next prime is 20170391. The reversal of 20170372 is 27307102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2029 + ... + 6667.

Almost surely, 2^20170372 is an apocalyptic number.

It is an amenable number.

20170372 is a deficient number, since it is larger than the sum of its proper divisors (15167868).

20170372 is a wasteful number, since it uses less digits than its factorization.

20170372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5730 (or 5728 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 20170372 is about 4491.1437296083. The cubic root of 20170372 is about 272.2103512679.

Adding to 20170372 its reverse (27307102), we get a palindrome (47477474).

The spelling of 20170372 in words is "twenty million, one hundred seventy thousand, three hundred seventy-two".