28921476 has 12 divisors (see below), whose sum is σ = 67483472. Its totient is φ = 9640488.

The previous prime is 28921397. The next prime is 28921489. The reversal of 28921476 is 67412982.

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

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, 1205050 + ... + 1205073.

Almost surely, 2^28921476 is an apocalyptic number.

It is an amenable number.

28921476 is an abundant number, since it is smaller than the sum of its proper divisors (38561996).

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

28921476 is a wasteful number, since it uses less digits than its factorization.

28921476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410130 (or 2410128 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 28921476 is about 5377.8690947252. The cubic root of 28921476 is about 306.9541323602.

The spelling of 28921476 in words is "twenty-eight million, nine hundred twenty-one thousand, four hundred seventy-six".