20631254 has 12 divisors (see below), whose sum is σ = 35999604. Its totient is φ = 8841924.

The previous prime is 20631229. The next prime is 20631263. The reversal of 20631254 is 45213602.

It is a super-2 number, since 2×20631254² = 851297283225032, 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 5 ways as a sum of consecutive naturals, for example, 105164 + ... + 105359.

It is an arithmetic number, because the mean of its divisors is an integer number (2999967).

Almost surely, 2^20631254 is an apocalyptic number.

20631254 is a deficient number, since it is larger than the sum of its proper divisors (15368350).

20631254 is a wasteful number, since it uses less digits than its factorization.

20631254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210539 (or 210532 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20631254 is about 4542.1640216971. The cubic root of 20631254 is about 274.2680435923.

Adding to 20631254 its reverse (45213602), we get a palindrome (65844856).

The spelling of 20631254 in words is "twenty million, six hundred thirty-one thousand, two hundred fifty-four".