13775028 has 24 divisors (see below), whose sum is σ = 32310432. Its totient is φ = 4567584.

The previous prime is 13775017. The next prime is 13775033. The reversal of 13775028 is 82057731.

It is a self number, because there is not a number n which added to its sum of digits gives 13775028.

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, 550 + ... + 5277.

It is an arithmetic number, because the mean of its divisors is an integer number (1346268).

Almost surely, 2^13775028 is an apocalyptic number.

It is an amenable number.

13775028 is an abundant number, since it is smaller than the sum of its proper divisors (18535404).

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

13775028 is a wasteful number, since it uses less digits than its factorization.

13775028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031 (or 6029 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 13775028 is about 3711.4724840688. The cubic root of 13775028 is about 239.7162619073.

The spelling of 13775028 in words is "thirteen million, seven hundred seventy-five thousand, twenty-eight".