13522890 has 32 divisors (see below), whose sum is σ = 32783616. Its totient is φ = 3569600.

The previous prime is 13522879. The next prime is 13522909. The reversal of 13522890 is 9822531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (1024488).

Almost surely, 2^13522890 is an apocalyptic number.

13522890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13522890 is an abundant number, since it is smaller than the sum of its proper divisors (19260726).

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

13522890 is a wasteful number, since it uses less digits than its factorization.

13522890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13522890 is about 3677.3482293631. The cubic root of 13522890 is about 238.2446581399.

The spelling of 13522890 in words is "thirteen million, five hundred twenty-two thousand, eight hundred ninety".