13903245 has 24 divisors (see below), whose sum is σ = 24993696. Its totient is φ = 7414416.

The previous prime is 13903243. The next prime is 13903271. The reversal of 13903245 is 54230931.

It is not a de Polignac number, because 13903245 - 2¹ = 13903243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13903243) 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 23 ways as a sum of consecutive naturals, for example, 4507 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (1041404).

Almost surely, 2^13903245 is an apocalyptic number.

13903245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13903245 is a deficient number, since it is larger than the sum of its proper divisors (11090451).

13903245 is an equidigital number, since it uses as much as digits as its factorization.

13903245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11463 (or 11451 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 13903245 is about 3728.7055394600. The cubic root of 13903245 is about 240.4577202458.

The spelling of 13903245 in words is "thirteen million, nine hundred three thousand, two hundred forty-five".