13920733 has 4 divisors (see below), whose sum is σ = 13958428. Its totient is φ = 13883040.

The previous prime is 13920721. The next prime is 13920737. The reversal of 13920733 is 33702931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9746884 + 4173849 = 3122^2 + 2043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13920733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13920737) 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, 18288 + ... + 19033.

It is an arithmetic number, because the mean of its divisors is an integer number (3489607).

Almost surely, 2^13920733 is an apocalyptic number.

It is an amenable number.

13920733 is a deficient number, since it is larger than the sum of its proper divisors (37695).

13920733 is an equidigital number, since it uses as much as digits as its factorization.

13920733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37694.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 13920733 is about 3731.0498522534. The cubic root of 13920733 is about 240.5584967845.

The spelling of 13920733 in words is "thirteen million, nine hundred twenty thousand, seven hundred thirty-three".