13920235 has 8 divisors (see below), whose sum is σ = 19090656. Its totient is φ = 9545280.

The previous prime is 13920233. The next prime is 13920239. The reversal of 13920235 is 53202931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13920235 - 2¹ = 13920233 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 198826 + ... + 198895.

It is an arithmetic number, because the mean of its divisors is an integer number (2386332).

Almost surely, 2^13920235 is an apocalyptic number.

13920235 is a deficient number, since it is larger than the sum of its proper divisors (5170421).

13920235 is an equidigital number, since it uses as much as digits as its factorization.

13920235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397733.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 13920235 is about 3730.9831144083. The cubic root of 13920235 is about 240.5556281721. Note that the first 3 decimals are identical.

The spelling of 13920235 in words is "thirteen million, nine hundred twenty thousand, two hundred thirty-five".