28675331 has 4 divisors (see below), whose sum is σ = 28690464. Its totient is φ = 28660200.

The previous prime is 28675327. The next prime is 28675337. The reversal of 28675331 is 13357682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28675331 - 2² = 28675327 is a prime.

It is a super-2 number, since 2×28675331² = 1644549215919122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28675291 and 28675300.

It is not an unprimeable number, because it can be changed into a prime (28675337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4235 + ... + 8676.

It is an arithmetic number, because the mean of its divisors is an integer number (7172616).

Almost surely, 2^28675331 is an apocalyptic number.

28675331 is a deficient number, since it is larger than the sum of its proper divisors (15133).

28675331 is a wasteful number, since it uses less digits than its factorization.

28675331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15132.

The product of its digits is 30240, while the sum is 35.

The square root of 28675331 is about 5354.9352003549. The cubic root of 28675331 is about 306.0808414144.

The spelling of 28675331 in words is "twenty-eight million, six hundred seventy-five thousand, three hundred thirty-one".