13920650 has 12 divisors (see below), whose sum is σ = 25892502. Its totient is φ = 5568240.

The previous prime is 13920649. The next prime is 13920659. The reversal of 13920650 is 5602931.

It can be written as a sum of positive squares in 3 ways, for example, as 12794929 + 1125721 = 3577^2 + 1061^2 .

It is not an unprimeable number, because it can be changed into a prime (13920659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139157 + ... + 139256.

Almost surely, 2^13920650 is an apocalyptic number.

13920650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13920650 is a deficient number, since it is larger than the sum of its proper divisors (11971852).

13920650 is a wasteful number, since it uses less digits than its factorization.

13920650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278425 (or 278420 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 13920650 is about 3731.0387293621. The cubic root of 13920650 is about 240.5580186872.

The spelling of 13920650 in words is "thirteen million, nine hundred twenty thousand, six hundred fifty".