20057070 has 32 divisors (see below), whose sum is σ = 52513920. Its totient is φ = 4862240.

The previous prime is 20057069. The next prime is 20057083. The reversal of 20057070 is 7075002.

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 15 ways as a sum of consecutive naturals, for example, 30060 + ... + 30719.

It is an arithmetic number, because the mean of its divisors is an integer number (1641060).

Almost surely, 2^20057070 is an apocalyptic number.

20057070 is an abundant number, since it is smaller than the sum of its proper divisors (32456850).

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

20057070 is a wasteful number, since it uses less digits than its factorization.

20057070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60800.

The product of its (nonzero) digits is 490, while the sum is 21.

The square root of 20057070 is about 4478.5120296813. The cubic root of 20057070 is about 271.6997028254.

The spelling of 20057070 in words is "twenty million, fifty-seven thousand, seventy".