28634860 has 24 divisors (see below), whose sum is σ = 60812640. Its totient is φ = 11324544.

The previous prime is 28634857. The next prime is 28634863. The reversal of 28634860 is 6843682.

It is an interprime number because it is at equal distance from previous prime (28634857) and next prime (28634863).

It is not an unprimeable number, because it can be changed into a prime (28634863) 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, 6264 + ... + 9823.

It is an arithmetic number, because the mean of its divisors is an integer number (2533860).

Almost surely, 2^28634860 is an apocalyptic number.

28634860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28634860 is an abundant number, since it is smaller than the sum of its proper divisors (32177780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28634860 is a wasteful number, since it uses less digits than its factorization.

28634860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16185 (or 16183 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 28634860 is about 5351.1550155083. The cubic root of 28634860 is about 305.9367776316.

The spelling of 28634860 in words is "twenty-eight million, six hundred thirty-four thousand, eight hundred sixty".