108020857 has 16 divisors (see below), whose sum is σ = 129272832. Its totient is φ = 88252560.

The previous prime is 108020831. The next prime is 108020863. The reversal of 108020857 is 758020801.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108020857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108020807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52278 + ... + 54304.

It is an arithmetic number, because the mean of its divisors is an integer number (8079552).

Almost surely, 2^108020857 is an apocalyptic number.

It is an amenable number.

108020857 is a deficient number, since it is larger than the sum of its proper divisors (21251975).

108020857 is a wasteful number, since it uses less digits than its factorization.

108020857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 108020857 is about 10393.3082798501. The cubic root of 108020857 is about 476.2509695652.

The spelling of 108020857 in words is "one hundred eight million, twenty thousand, eight hundred fifty-seven".