20892057 has 8 divisors (see below), whose sum is σ = 28001184. Its totient is φ = 13855488.

The previous prime is 20892043. The next prime is 20892061. The reversal of 20892057 is 75029802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20892057 - 2⁴ = 20892041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20892037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17463 + ... + 18620.

It is an arithmetic number, because the mean of its divisors is an integer number (3500148).

Almost surely, 2^20892057 is an apocalyptic number.

It is an amenable number.

20892057 is a deficient number, since it is larger than the sum of its proper divisors (7109127).

20892057 is a wasteful number, since it uses less digits than its factorization.

20892057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36279.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 20892057 is about 4570.7829745023. The cubic root of 20892057 is about 275.4188965737.

The spelling of 20892057 in words is "twenty million, eight hundred ninety-two thousand, fifty-seven".