20731052 has 12 divisors (see below), whose sum is σ = 38188920. Its totient is φ = 9819936.

The previous prime is 20731049. The next prime is 20731057. The reversal of 20731052 is 25013702.

It is not an unprimeable number, because it can be changed into a prime (20731057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136313 + ... + 136464.

It is an arithmetic number, because the mean of its divisors is an integer number (3182410).

Almost surely, 2^20731052 is an apocalyptic number.

It is an amenable number.

20731052 is a deficient number, since it is larger than the sum of its proper divisors (17457868).

20731052 is a wasteful number, since it uses less digits than its factorization.

20731052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272800 (or 272798 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 20731052 is about 4553.1365013582. The cubic root of 20731052 is about 274.7095644449.

Adding to 20731052 its reverse (25013702), we get a palindrome (45744754).

It can be divided in two parts, 2073 and 1052, that added together give a 5-th power (3125 = 5⁵).

The spelling of 20731052 in words is "twenty million, seven hundred thirty-one thousand, fifty-two".