20252984 has 32 divisors (see below), whose sum is σ = 40538880. Its totient is φ = 9452544.

The previous prime is 20252983. The next prime is 20252987. The reversal of 20252984 is 48925202.

It is a self number, because there is not a number n which added to its sum of digits gives 20252984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18089 + ... + 19175.

It is an arithmetic number, because the mean of its divisors is an integer number (1266840).

Almost surely, 2^20252984 is an apocalyptic number.

It is an amenable number.

20252984 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20252984 is a wasteful number, since it uses less digits than its factorization.

20252984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20252984 is about 4500.3315433421. The cubic root of 20252984 is about 272.5814766323.

The spelling of 20252984 in words is "twenty million, two hundred fifty-two thousand, nine hundred eighty-four".