28759788 has 36 divisors (see below), whose sum is σ = 72982728. Its totient is φ = 9549120.

The previous prime is 28759777. The next prime is 28759789. The reversal of 28759788 is 88795782.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (28759789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8695 + ... + 11537.

It is an arithmetic number, because the mean of its divisors is an integer number (2027298).

Almost surely, 2^28759788 is an apocalyptic number.

It is an amenable number.

28759788 is an abundant number, since it is smaller than the sum of its proper divisors (44222940).

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

28759788 is a wasteful number, since it uses less digits than its factorization.

28759788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134 (or 3129 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 28759788 is about 5362.8153054156. The cubic root of 28759788 is about 306.3810452363.

The spelling of 28759788 in words is "twenty-eight million, seven hundred fifty-nine thousand, seven hundred eighty-eight".