20359157 has 24 divisors (see below), whose sum is σ = 26353152. Its totient is φ = 15573600.

The previous prime is 20359133. The next prime is 20359187. The reversal of 20359157 is 75195302.

It is not a de Polignac number, because 20359157 - 2⁸ = 20358901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20359187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19232 + ... + 20262.

It is an arithmetic number, because the mean of its divisors is an integer number (1098048).

Almost surely, 2^20359157 is an apocalyptic number.

It is an amenable number.

20359157 is a deficient number, since it is larger than the sum of its proper divisors (5993995).

20359157 is a wasteful number, since it uses less digits than its factorization.

20359157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 20359157 is about 4512.1122548093. The cubic root of 20359157 is about 273.0569681683.

The spelling of 20359157 in words is "twenty million, three hundred fifty-nine thousand, one hundred fifty-seven".