13992040 has 16 divisors (see below), whose sum is σ = 31482180. Its totient is φ = 5596800.

The previous prime is 13992023. The next prime is 13992047. The reversal of 13992040 is 4029931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13942756 + 49284 = 3734^2 + 222^2 .

It is not an unprimeable number, because it can be changed into a prime (13992047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174861 + ... + 174940.

Almost surely, 2^13992040 is an apocalyptic number.

13992040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13992040 is an abundant number, since it is smaller than the sum of its proper divisors (17490140).

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

13992040 is a wasteful number, since it uses less digits than its factorization.

13992040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349812 (or 349808 counting only the distinct ones).

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

The square root of 13992040 is about 3740.5935357908. The cubic root of 13992040 is about 240.9685398234.

The spelling of 13992040 in words is "thirteen million, nine hundred ninety-two thousand, forty".