28652897 has 24 divisors (see below), whose sum is σ = 37078272. Its totient is φ = 21924000.

The previous prime is 28652887. The next prime is 28652941. The reversal of 28652897 is 79825682.

It is not a de Polignac number, because 28652897 - 2⁴ = 28652881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28652857) 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, 19022 + ... + 20472.

It is an arithmetic number, because the mean of its divisors is an integer number (1544928).

Almost surely, 2^28652897 is an apocalyptic number.

It is an amenable number.

28652897 is a deficient number, since it is larger than the sum of its proper divisors (8425375).

28652897 is a wasteful number, since it uses less digits than its factorization.

28652897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509 (or 1502 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 28652897 is about 5352.8400872808. The cubic root of 28652897 is about 306.0010003242.

The spelling of 28652897 in words is "twenty-eight million, six hundred fifty-two thousand, eight hundred ninety-seven".