28547156 has 24 divisors (see below), whose sum is σ = 56259840. Its totient is φ = 12556800.

The previous prime is 28547137. The next prime is 28547179. The reversal of 28547156 is 65174582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9101 + ... + 11828.

It is an arithmetic number, because the mean of its divisors is an integer number (2344160).

Almost surely, 2^28547156 is an apocalyptic number.

It is an amenable number.

28547156 is a deficient number, since it is larger than the sum of its proper divisors (27712684).

28547156 is a wasteful number, since it uses less digits than its factorization.

28547156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20975 (or 20973 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 28547156 is about 5342.9538646707. The cubic root of 28547156 is about 305.6241130476.

The spelling of 28547156 in words is "twenty-eight million, five hundred forty-seven thousand, one hundred fifty-six".