28479267 has 24 divisors (see below), whose sum is σ = 45455904. Its totient is φ = 17090304.

The previous prime is 28479259. The next prime is 28479281. The reversal of 28479267 is 76297482.

It is not a de Polignac number, because 28479267 - 2³ = 28479259 is a prime.

It is a super-2 number, since 2×28479267² = 1622137297714578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28479257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 528 + ... + 7565.

It is an arithmetic number, because the mean of its divisors is an integer number (1893996).

Almost surely, 2^28479267 is an apocalyptic number.

28479267 is a deficient number, since it is larger than the sum of its proper divisors (16976637).

28479267 is a wasteful number, since it uses less digits than its factorization.

28479267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8139 (or 8136 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 28479267 is about 5336.5969493676. The cubic root of 28479267 is about 305.3816489090.

The spelling of 28479267 in words is "twenty-eight million, four hundred seventy-nine thousand, two hundred sixty-seven".