28007276 has 48 divisors (see below), whose sum is σ = 55617408. Its totient is φ = 12230400.

The previous prime is 28007269. The next prime is 28007281. The reversal of 28007276 is 67270082.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213731 + ... + 213861.

It is an arithmetic number, because the mean of its divisors is an integer number (1158696).

Almost surely, 2^28007276 is an apocalyptic number.

It is an amenable number.

28007276 is a deficient number, since it is larger than the sum of its proper divisors (27610132).

28007276 is a wasteful number, since it uses less digits than its factorization.

28007276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 28007276 is about 5292.1900948473. The cubic root of 28007276 is about 303.6851975541.

The spelling of 28007276 in words is "twenty-eight million, seven thousand, two hundred seventy-six".