28908276 has 12 divisors (see below), whose sum is σ = 67452672. Its totient is φ = 9636088.

The previous prime is 28908251. The next prime is 28908281. The reversal of 28908276 is 67280982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204500 + ... + 1204523.

It is an arithmetic number, because the mean of its divisors is an integer number (5621056).

Almost surely, 2^28908276 is an apocalyptic number.

It is an amenable number.

28908276 is an abundant number, since it is smaller than the sum of its proper divisors (38544396).

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

28908276 is a wasteful number, since it uses less digits than its factorization.

28908276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409030 (or 2409028 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 28908276 is about 5376.6417027732. The cubic root of 28908276 is about 306.9074264553.

The spelling of 28908276 in words is "twenty-eight million, nine hundred eight thousand, two hundred seventy-six".