20633620 has 48 divisors (see below), whose sum is σ = 52133760. Its totient is φ = 6701184.

The previous prime is 20633617. The next prime is 20633623. The reversal of 20633620 is 2633602.

It is an interprime number because it is at equal distance from previous prime (20633617) and next prime (20633623).

It is a junction number, because it is equal to n+sod(n) for n = 20633591 and 20633600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20633623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219 + ... + 6538.

It is an arithmetic number, because the mean of its divisors is an integer number (1086120).

Almost surely, 2^20633620 is an apocalyptic number.

20633620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20633620 is an abundant number, since it is smaller than the sum of its proper divisors (31500140).

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

20633620 is a wasteful number, since it uses less digits than its factorization.

20633620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7792 (or 7790 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 20633620 is about 4542.4244627732. The cubic root of 20633620 is about 274.2785275791.

The spelling of 20633620 in words is "twenty million, six hundred thirty-three thousand, six hundred twenty".