20245624 has 24 divisors (see below), whose sum is σ = 44159040. Its totient is φ = 8676528.

The previous prime is 20245619. The next prime is 20245637. The reversal of 20245624 is 42654202.

It is a super-2 number, since 2×20245624² = 819770582298752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25432 + ... + 26215.

It is an arithmetic number, because the mean of its divisors is an integer number (1839960).

Almost surely, 2^20245624 is an apocalyptic number.

It is an amenable number.

20245624 is an abundant number, since it is smaller than the sum of its proper divisors (23913416).

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

20245624 is a wasteful number, since it uses less digits than its factorization.

20245624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51667 (or 51656 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20245624 is about 4499.5137515069. The cubic root of 20245624 is about 272.5484536345.

Adding to 20245624 its reverse (42654202), we get a palindrome (62899826).

The spelling of 20245624 in words is "twenty million, two hundred forty-five thousand, six hundred twenty-four".