28332977 has 8 divisors (see below), whose sum is σ = 29309952. Its totient is φ = 27360000.

The previous prime is 28332973. The next prime is 28332989. The reversal of 28332977 is 77923382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28332977 - 2² = 28332973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28332973) 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, 22673 + ... + 23889.

It is an arithmetic number, because the mean of its divisors is an integer number (3663744).

Almost surely, 2^28332977 is an apocalyptic number.

It is an amenable number.

28332977 is a deficient number, since it is larger than the sum of its proper divisors (976975).

28332977 is a wasteful number, since it uses less digits than its factorization.

28332977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999.

The product of its digits is 127008, while the sum is 41.

The square root of 28332977 is about 5322.8730024302. The cubic root of 28332977 is about 304.8578644363.

The spelling of 28332977 in words is "twenty-eight million, three hundred thirty-two thousand, nine hundred seventy-seven".