20232158 has 4 divisors (see below), whose sum is σ = 30348240. Its totient is φ = 10116078.

The previous prime is 20232151. The next prime is 20232197. The reversal of 20232158 is 85123202.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5058038 + ... + 5058041.

It is an arithmetic number, because the mean of its divisors is an integer number (7587060).

Almost surely, 2^20232158 is an apocalyptic number.

20232158 is a deficient number, since it is larger than the sum of its proper divisors (10116082).

20232158 is a wasteful number, since it uses less digits than its factorization.

20232158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10116081.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20232158 is about 4498.0171186869. The cubic root of 20232158 is about 272.4880133885.

It can be divided in two parts, 20232 and 158, that multiplied together give a triangular number (3196656 = T₂₅₂₈).

The spelling of 20232158 in words is "twenty million, two hundred thirty-two thousand, one hundred fifty-eight".