20055320 has 16 divisors (see below), whose sum is σ = 45124560. Its totient is φ = 8022112.

The previous prime is 20055313. The next prime is 20055377. The reversal of 20055320 is 2355002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250652 + ... + 250731.

It is an arithmetic number, because the mean of its divisors is an integer number (2820285).

Almost surely, 2^20055320 is an apocalyptic number.

20055320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20055320 is an abundant number, since it is smaller than the sum of its proper divisors (25069240).

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

20055320 is a wasteful number, since it uses less digits than its factorization.

20055320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501394 (or 501390 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 20055320 is about 4478.3166480275. The cubic root of 20055320 is about 271.6918005694.

The spelling of 20055320 in words is "twenty million, fifty-five thousand, three hundred twenty".