13812390 has 32 divisors (see below), whose sum is σ = 36833760. Its totient is φ = 3683232.

The previous prime is 13812361. The next prime is 13812419. The reversal of 13812390 is 9321831.

It is an interprime number because it is at equal distance from previous prime (13812361) and next prime (13812419).

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

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25309 + ... + 25848.

It is an arithmetic number, because the mean of its divisors is an integer number (1151055).

Almost surely, 2^13812390 is an apocalyptic number.

13812390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13812390 is an abundant number, since it is smaller than the sum of its proper divisors (23021370).

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

13812390 is a wasteful number, since it uses less digits than its factorization.

13812390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51173 (or 51167 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13812390 is about 3716.5023879987. The cubic root of 13812390 is about 239.9327936822.

The spelling of 13812390 in words is "thirteen million, eight hundred twelve thousand, three hundred ninety".