28634396 has 24 divisors (see below), whose sum is σ = 58057440. Its totient is φ = 12102912.

The previous prime is 28634329. The next prime is 28634399. The reversal of 28634396 is 69343682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28634399) 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, 4961 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (2419060).

Almost surely, 2^28634396 is an apocalyptic number.

It is an amenable number.

28634396 is an abundant number, since it is smaller than the sum of its proper divisors (29423044).

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

28634396 is a wasteful number, since it uses less digits than its factorization.

28634396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14093 (or 14091 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 28634396 is about 5351.1116602067. Note that the first 3 decimals coincide. The cubic root of 28634396 is about 305.9351251536.

The spelling of 28634396 in words is "twenty-eight million, six hundred thirty-four thousand, three hundred ninety-six".