28775064 has 32 divisors (see below), whose sum is σ = 72069120. Its totient is φ = 9574176.

The previous prime is 28775059. The next prime is 28775077. The reversal of 28775064 is 46057782.

It is a congruent 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, 25537 + ... + 26639.

It is an arithmetic number, because the mean of its divisors is an integer number (2252160).

Almost surely, 2^28775064 is an apocalyptic number.

28775064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28775064 is an abundant number, since it is smaller than the sum of its proper divisors (43294056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28775064 is a wasteful number, since it uses less digits than its factorization.

28775064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2195 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 28775064 is about 5364.2393682609. The cubic root of 28775064 is about 306.4352812461.

The spelling of 28775064 in words is "twenty-eight million, seven hundred seventy-five thousand, sixty-four".