13420390 has 16 divisors (see below), whose sum is σ = 24227280. Its totient is φ = 5352480.

The previous prime is 13420387. The next prime is 13420397. The reversal of 13420390 is 9302431.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020 + ... + 5560.

It is an arithmetic number, because the mean of its divisors is an integer number (1514205).

Almost surely, 2^13420390 is an apocalyptic number.

13420390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13420390 is a deficient number, since it is larger than the sum of its proper divisors (10806890).

13420390 is a wasteful number, since it uses less digits than its factorization.

13420390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13420390 is about 3663.3850466474. The cubic root of 13420390 is about 237.6411865970.

The spelling of 13420390 in words is "thirteen million, four hundred twenty thousand, three hundred ninety".