20312254 has 32 divisors (see below), whose sum is σ = 33960960. Its totient is φ = 9072000.

The previous prime is 20312249. The next prime is 20312293. The reversal of 20312254 is 45221302.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50454 + ... + 50854.

It is an arithmetic number, because the mean of its divisors is an integer number (1061280).

Almost surely, 2^20312254 is an apocalyptic number.

20312254 is a deficient number, since it is larger than the sum of its proper divisors (13648706).

20312254 is a wasteful number, since it uses less digits than its factorization.

20312254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20312254 is about 4506.9118029977. The cubic root of 20312254 is about 272.8471192936.

Adding to 20312254 its reverse (45221302), we get a palindrome (65533556).

The spelling of 20312254 in words is "twenty million, three hundred twelve thousand, two hundred fifty-four".