20057975 has 12 divisors (see below), whose sum is σ = 28425264. Its totient is φ = 13753920.

The previous prime is 20057971. The next prime is 20057981. The reversal of 20057975 is 57975002.

It is not a de Polignac number, because 20057975 - 2² = 20057971 is a prime.

It is a super-2 number, since 2×20057975² = 804644722201250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20057971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57134 + ... + 57483.

It is an arithmetic number, because the mean of its divisors is an integer number (2368772).

Almost surely, 2^20057975 is an apocalyptic number.

20057975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20057975 is a deficient number, since it is larger than the sum of its proper divisors (8367289).

20057975 is a wasteful number, since it uses less digits than its factorization.

20057975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114634 (or 114629 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 20057975 is about 4478.6130665642. The cubic root of 20057975 is about 271.7037892404.

The spelling of 20057975 in words is "twenty million, fifty-seven thousand, nine hundred seventy-five".