28641875 has 10 divisors (see below), whose sum is σ = 35791668. Its totient is φ = 22913000.

The previous prime is 28641859. The next prime is 28641881. The reversal of 28641875 is 57814682.

It is not a de Polignac number, because 28641875 - 2⁴ = 28641859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22289 + ... + 23538.

Almost surely, 2^28641875 is an apocalyptic number.

28641875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28641875 is a deficient number, since it is larger than the sum of its proper divisors (7149793).

28641875 is an frugal number, since it uses more digits than its factorization.

28641875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45847 (or 45832 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 28641875 is about 5351.8104413367. The cubic root of 28641875 is about 305.9617585030.

The spelling of 28641875 in words is "twenty-eight million, six hundred forty-one thousand, eight hundred seventy-five".