13920490 has 16 divisors (see below), whose sum is σ = 25340040. Its totient is φ = 5505280.

The previous prime is 13920479. The next prime is 13920509. The reversal of 13920490 is 9402931.

It is a happy number.

13920490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12938409 + 982081 = 3597^2 + 991^2 .

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, 6931 + ... + 8710.

Almost surely, 2^13920490 is an apocalyptic number.

13920490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13920490 is a deficient number, since it is larger than the sum of its proper divisors (11419550).

13920490 is a wasteful number, since it uses less digits than its factorization.

13920490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15737.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13920490 is about 3731.0172875504. The cubic root of 13920490 is about 240.5570970485.

The spelling of 13920490 in words is "thirteen million, nine hundred twenty thousand, four hundred ninety".