20371492 has 12 divisors (see below), whose sum is σ = 36408960. Its totient is φ = 9968936.

The previous prime is 20371469. The next prime is 20371501. The reversal of 20371492 is 29417302.

It is a self number, because there is not a number n which added to its sum of digits gives 20371492.

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, 53992 + ... + 54367.

It is an arithmetic number, because the mean of its divisors is an integer number (3034080).

Almost surely, 2^20371492 is an apocalyptic number.

It is an amenable number.

20371492 is a deficient number, since it is larger than the sum of its proper divisors (16037468).

20371492 is a wasteful number, since it uses less digits than its factorization.

20371492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108410 (or 108408 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20371492 is about 4513.4789242889. The cubic root of 20371492 is about 273.1121026992.

Adding to 20371492 its reverse (29417302), we get a palindrome (49788794).

The spelling of 20371492 in words is "twenty million, three hundred seventy-one thousand, four hundred ninety-two".