28975077 has 48 divisors (see below), whose sum is σ = 46126080. Its totient is φ = 18153072.

The previous prime is 28974989. The next prime is 28975081. The reversal of 28975077 is 77057982.

It is not a de Polignac number, because 28975077 - 2⁷ = 28974949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28975097) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 491074 + ... + 491132.

It is an arithmetic number, because the mean of its divisors is an integer number (960960).

Almost surely, 2^28975077 is an apocalyptic number.

28975077 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28975077 is a deficient number, since it is larger than the sum of its proper divisors (17151003).

28975077 is an equidigital number, since it uses as much as digits as its factorization.

28975077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 28975077 is about 5382.8502672841. The cubic root of 28975077 is about 307.1436442948.

The spelling of 28975077 in words is "twenty-eight million, nine hundred seventy-five thousand, seventy-seven".