13420280 has 16 divisors (see below), whose sum is σ = 30195720. Its totient is φ = 5368096.

The previous prime is 13420271. The next prime is 13420291. The reversal of 13420280 is 8202431.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 167714 + ... + 167793.

Almost surely, 2^13420280 is an apocalyptic number.

13420280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13420280 is an abundant number, since it is smaller than the sum of its proper divisors (16775440).

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

13420280 is a wasteful number, since it uses less digits than its factorization.

13420280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335518 (or 335514 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 13420280 is about 3663.3700331798. The cubic root of 13420280 is about 237.6405373212.

The spelling of 13420280 in words is "thirteen million, four hundred twenty thousand, two hundred eighty".