13765028 has 6 divisors (see below), whose sum is σ = 24088806. Its totient is φ = 6882512.

The previous prime is 13765027. The next prime is 13765033. The reversal of 13765028 is 82056731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13235044 + 529984 = 3638^2 + 728^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13764985 and 13765003.

It is not an unprimeable number, because it can be changed into a prime (13765021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1720625 + ... + 1720632.

It is an arithmetic number, because the mean of its divisors is an integer number (4014801).

Almost surely, 2^13765028 is an apocalyptic number.

It is an amenable number.

13765028 is a deficient number, since it is larger than the sum of its proper divisors (10323778).

13765028 is a wasteful number, since it uses less digits than its factorization.

13765028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441261 (or 3441259 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 13765028 is about 3710.1250652774. The cubic root of 13765028 is about 239.6582404178.

The spelling of 13765028 in words is "thirteen million, seven hundred sixty-five thousand, twenty-eight".