20313552 has 40 divisors (see below), whose sum is σ = 59974336. Its totient is φ = 5803776.

The previous prime is 20313511. The next prime is 20313563. The reversal of 20313552 is 25531302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29893 + ... + 30564.

Almost surely, 2^20313552 is an apocalyptic number.

It is an amenable number.

20313552 is an abundant number, since it is smaller than the sum of its proper divisors (39660784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313552 is a wasteful number, since it uses less digits than its factorization.

20313552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60475 (or 60469 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 20313552 is about 4507.0558017402. The cubic root of 20313552 is about 272.8529310237.

Adding to 20313552 its reverse (25531302), we get a palindrome (45844854).

The spelling of 20313552 in words is "twenty million, three hundred thirteen thousand, five hundred fifty-two".