28956158 has 24 divisors (see below), whose sum is σ = 55120824. Its totient is φ = 11281200.

The previous prime is 28956131. The next prime is 28956167. The reversal of 28956158 is 85165982.

It is a super-2 number, since 2×28956158² = 1676918172241928, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12353 + ... + 14508.

It is an arithmetic number, because the mean of its divisors is an integer number (2296701).

Almost surely, 2^28956158 is an apocalyptic number.

28956158 is a deficient number, since it is larger than the sum of its proper divisors (26164666).

28956158 is a wasteful number, since it uses less digits than its factorization.

28956158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26888 (or 26881 counting only the distinct ones).

The product of its digits is 172800, while the sum is 44.

The square root of 28956158 is about 5381.0926399756. The cubic root of 28956158 is about 307.0767809030.

The spelling of 28956158 in words is "twenty-eight million, nine hundred fifty-six thousand, one hundred fifty-eight".