28555276 has 6 divisors (see below), whose sum is σ = 49971740. Its totient is φ = 14277636.

The previous prime is 28555253. The next prime is 28555301. The reversal of 28555276 is 67255582.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569406 + ... + 3569413.

Almost surely, 2^28555276 is an apocalyptic number.

It is an amenable number.

28555276 is a deficient number, since it is larger than the sum of its proper divisors (21416464).

28555276 is a wasteful number, since it uses less digits than its factorization.

28555276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138823 (or 7138821 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 28555276 is about 5343.7136899351. The cubic root of 28555276 is about 305.6530877090.

The spelling of 28555276 in words is "twenty-eight million, five hundred fifty-five thousand, two hundred seventy-six".