20315158 has 8 divisors (see below), whose sum is σ = 30554280. Its totient is φ = 10130400.

The previous prime is 20315147. The next prime is 20315171. The reversal of 20315158 is 85151302.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12643 + ... + 14158.

It is an arithmetic number, because the mean of its divisors is an integer number (3819285).

Almost surely, 2^20315158 is an apocalyptic number.

20315158 is a deficient number, since it is larger than the sum of its proper divisors (10239122).

20315158 is a wasteful number, since it uses less digits than its factorization.

20315158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27182.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 20315158 is about 4507.2339633083. The cubic root of 20315158 is about 272.8601214658.

The spelling of 20315158 in words is "twenty million, three hundred fifteen thousand, one hundred fifty-eight".