20190392 has 16 divisors (see below), whose sum is σ = 38738040. Its totient is φ = 9860256.

The previous prime is 20190371. The next prime is 20190421. The reversal of 20190392 is 29309102.

It is a super-2 number, since 2×20190392² = 815303858227328, which contains 22 as substring.

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, 29003 + ... + 29690.

Almost surely, 2^20190392 is an apocalyptic number.

It is an amenable number.

20190392 is a deficient number, since it is larger than the sum of its proper divisors (18547648).

20190392 is a wasteful number, since it uses less digits than its factorization.

20190392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58742 (or 58738 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 20190392 is about 4493.3720077465. The cubic root of 20190392 is about 272.3003818206.

Adding to 20190392 its reverse (29309102), we get a palindrome (49499494).

The spelling of 20190392 in words is "twenty million, one hundred ninety thousand, three hundred ninety-two".