20601624 has 32 divisors (see below), whose sum is σ = 54216000. Its totient is φ = 6505632.

The previous prime is 20601617. The next prime is 20601667. The reversal of 20601624 is 42610602.

It is a happy number.

It is a super-2 number, since 2×20601624² = 848853822874752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20601624.

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, 22134 + ... + 23045.

It is an arithmetic number, because the mean of its divisors is an integer number (1694250).

Almost surely, 2^20601624 is an apocalyptic number.

20601624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20601624 is an abundant number, since it is smaller than the sum of its proper divisors (33614376).

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

20601624 is a wasteful number, since it uses less digits than its factorization.

20601624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45207 (or 45203 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20601624 is about 4538.9011886138. The cubic root of 20601624 is about 274.1366821214.

The spelling of 20601624 in words is "twenty million, six hundred one thousand, six hundred twenty-four".