20934420 has 48 divisors (see below), whose sum is σ = 63127680. Its totient is φ = 5152896.

The previous prime is 20934401. The next prime is 20934437. The reversal of 20934420 is 2443902.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12640 + ... + 14199.

It is an arithmetic number, because the mean of its divisors is an integer number (1315160).

Almost surely, 2^20934420 is an apocalyptic number.

20934420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20934420 is an abundant number, since it is smaller than the sum of its proper divisors (42193260).

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

20934420 is a wasteful number, since it uses less digits than its factorization.

20934420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26864 (or 26862 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20934420 is about 4575.4147353000. The cubic root of 20934420 is about 275.6049272973.

The spelling of 20934420 in words is "twenty million, nine hundred thirty-four thousand, four hundred twenty".