13790556 has 72 divisors (see below), whose sum is σ = 38118080. Its totient is φ = 4178304.

The previous prime is 13790551. The next prime is 13790563. The reversal of 13790556 is 65509731.

13790556 = T₁₂₃ + T₁₂₄ + ... + T₄₃₈.

It is a happy number.

13790556 is a `hidden beast` number, since 13 + 7 + 90 + 556 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13790556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13790551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36786 + ... + 37158.

Almost surely, 2^13790556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13790556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19059040).

13790556 is an abundant number, since it is smaller than the sum of its proper divisors (24327524).

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

13790556 is a wasteful number, since it uses less digits than its factorization.

13790556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 13790556 is about 3713.5637869841. The cubic root of 13790556 is about 239.8063020467.

The spelling of 13790556 in words is "thirteen million, seven hundred ninety thousand, five hundred fifty-six".