13920263 has 18 divisors (see below), whose sum is σ = 17219016. Its totient is φ = 11218368.

The previous prime is 13920259. The next prime is 13920287. The reversal of 13920263 is 36202931.

It is not a de Polignac number, because 13920263 - 2² = 13920259 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 (13920233) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13670 + ... + 14652.

It is an arithmetic number, because the mean of its divisors is an integer number (956612).

Almost surely, 2^13920263 is an apocalyptic number.

13920263 is a deficient number, since it is larger than the sum of its proper divisors (3298753).

13920263 is an equidigital number, since it uses as much as digits as its factorization.

13920263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 13920263 is about 3730.9868667686. The cubic root of 13920263 is about 240.5557894614. Note that the first 3 decimals are identical.

It can be divided in two parts, 139 and 20263, that added together give a palindrome (20402).

The spelling of 13920263 in words is "thirteen million, nine hundred twenty thousand, two hundred sixty-three".