20352920 has 32 divisors (see below), whose sum is σ = 52336800. Its totient is φ = 6978048.

The previous prime is 20352919. The next prime is 20352947. The reversal of 20352920 is 2925302.

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 7 ways as a sum of consecutive naturals, for example, 36065 + ... + 36624.

It is an arithmetic number, because the mean of its divisors is an integer number (1635525).

Almost surely, 2^20352920 is an apocalyptic number.

20352920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20352920 is an abundant number, since it is smaller than the sum of its proper divisors (31983880).

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

20352920 is a wasteful number, since it uses less digits than its factorization.

20352920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72707 (or 72703 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20352920 is about 4511.4210621488. The cubic root of 20352920 is about 273.0290817771.

The spelling of 20352920 in words is "twenty million, three hundred fifty-two thousand, nine hundred twenty".