28634877 has 12 divisors (see below), whose sum is σ = 42893760. Its totient is φ = 19089756.

The previous prime is 28634869. The next prime is 28634899. The reversal of 28634877 is 77843682.

It is a happy number.

28634877 is a `hidden beast` number, since 2 + 8 + 634 + 8 + 7 + 7 = 666.

It is not a de Polignac number, because 28634877 - 2³ = 28634869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28634857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58677 + ... + 59162.

It is an arithmetic number, because the mean of its divisors is an integer number (3574480).

Almost surely, 2^28634877 is an apocalyptic number.

28634877 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28634877 is a deficient number, since it is larger than the sum of its proper divisors (14258883).

28634877 is an equidigital number, since it uses as much as digits as its factorization.

28634877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117854 (or 117842 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 28634877 is about 5351.1566039502. The cubic root of 28634877 is about 305.9368381747.

The spelling of 28634877 in words is "twenty-eight million, six hundred thirty-four thousand, eight hundred seventy-seven".