28576947 has 24 divisors (see below), whose sum is σ = 45760512. Its totient is φ = 15800400.

The previous prime is 28576943. The next prime is 28576957. The reversal of 28576947 is 74967582.

It is not a de Polignac number, because 28576947 - 2² = 28576943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28576896 and 28576905.

It is not an unprimeable number, because it can be changed into a prime (28576943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1422 + ... + 7692.

It is an arithmetic number, because the mean of its divisors is an integer number (1906688).

Almost surely, 2^28576947 is an apocalyptic number.

28576947 is a deficient number, since it is larger than the sum of its proper divisors (17183565).

28576947 is a wasteful number, since it uses less digits than its factorization.

28576947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319 (or 6312 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 28576947 is about 5345.7410150511. The cubic root of 28576947 is about 305.7303896308.

The spelling of 28576947 in words is "twenty-eight million, five hundred seventy-six thousand, nine hundred forty-seven".