28902875 has 8 divisors (see below), whose sum is σ = 36070944. Its totient is φ = 23122200.

The previous prime is 28902869. The next prime is 28902899. The reversal of 28902875 is 57820982.

It is a happy number.

It is not a de Polignac number, because 28902875 - 2⁴ = 28902859 is a prime.

It is a Duffinian 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, 115487 + ... + 115736.

It is an arithmetic number, because the mean of its divisors is an integer number (4508868).

Almost surely, 2^28902875 is an apocalyptic number.

28902875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28902875 is a deficient number, since it is larger than the sum of its proper divisors (7168069).

28902875 is an equidigital number, since it uses as much as digits as its factorization.

28902875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231238 (or 231228 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28902875 is about 5376.1394141149. The cubic root of 28902875 is about 306.8883118569. Note that the first 3 decimals are identical.

The spelling of 28902875 in words is "twenty-eight million, nine hundred two thousand, eight hundred seventy-five".