20453158 has 32 divisors (see below), whose sum is σ = 35562240. Its totient is φ = 8724960.

The previous prime is 20453123. The next prime is 20453171. The reversal of 20453158 is 85135402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69660 + ... + 69952.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320).

Almost surely, 2^20453158 is an apocalyptic number.

20453158 is a deficient number, since it is larger than the sum of its proper divisors (15109082).

20453158 is a wasteful number, since it uses less digits than its factorization.

20453158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 20453158 is about 4522.5167771939. The cubic root of 20453158 is about 273.4765701103.

The spelling of 20453158 in words is "twenty million, four hundred fifty-three thousand, one hundred fifty-eight".