20737420 has 24 divisors (see below), whose sum is σ = 47508048. Its totient is φ = 7540800.

The previous prime is 20737411. The next prime is 20737447. The reversal of 20737420 is 2473702.

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 7 ways as a sum of consecutive naturals, for example, 46911 + ... + 47350.

It is an arithmetic number, because the mean of its divisors is an integer number (1979502).

Almost surely, 2^20737420 is an apocalyptic number.

20737420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20737420 is an abundant number, since it is smaller than the sum of its proper divisors (26770628).

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

20737420 is a wasteful number, since it uses less digits than its factorization.

20737420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94281 (or 94279 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20737420 is about 4553.8357458301. The cubic root of 20737420 is about 274.7376892665.

The spelling of 20737420 in words is "twenty million, seven hundred thirty-seven thousand, four hundred twenty".