28936078 has 16 divisors (see below), whose sum is σ = 45223920. Its totient is φ = 13873600.

The previous prime is 28936073. The next prime is 28936087. The reversal of 28936078 is 87063982.

It is a super-2 number, since 2×28936078² = 1674593220044168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28936073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1848 + ... + 7828.

It is an arithmetic number, because the mean of its divisors is an integer number (2826495).

Almost surely, 2^28936078 is an apocalyptic number.

28936078 is a deficient number, since it is larger than the sum of its proper divisors (16287842).

28936078 is a wasteful number, since it uses less digits than its factorization.

28936078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 28936078 is about 5379.2265243248. The cubic root of 28936078 is about 307.0057824458.

The spelling of 28936078 in words is "twenty-eight million, nine hundred thirty-six thousand, seventy-eight".