13523990 has 16 divisors (see below), whose sum is σ = 24401952. Its totient is φ = 5396544.

The previous prime is 13523989. The next prime is 13523999. The reversal of 13523990 is 9932531.

13523990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13523999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3482 + ... + 6258.

It is an arithmetic number, because the mean of its divisors is an integer number (1525122).

Almost surely, 2^13523990 is an apocalyptic number.

13523990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13523990 is a deficient number, since it is larger than the sum of its proper divisors (10877962).

13523990 is a wasteful number, since it uses less digits than its factorization.

13523990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 13523990 is about 3677.4977906180. The cubic root of 13523990 is about 238.2511178542.

The spelling of 13523990 in words is "thirteen million, five hundred twenty-three thousand, nine hundred ninety".