13620280 has 32 divisors (see below), whose sum is σ = 30848400. Its totient is φ = 5412096.

The previous prime is 13620223. The next prime is 13620287. The reversal of 13620280 is 8202631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13620287) 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, 5476 + ... + 7564.

Almost surely, 2^13620280 is an apocalyptic number.

13620280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13620280 is an abundant number, since it is smaller than the sum of its proper divisors (17228120).

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

13620280 is a wasteful number, since it uses less digits than its factorization.

13620280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13620280 is about 3690.5663522012. The cubic root of 13620280 is about 238.8152257304.

The spelling of 13620280 in words is "thirteen million, six hundred twenty thousand, two hundred eighty".