13812280 has 16 divisors (see below), whose sum is σ = 31077720. Its totient is φ = 5524896.

The previous prime is 13812263. The next prime is 13812287. The reversal of 13812280 is 8221831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13812287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172614 + ... + 172693.

Almost surely, 2^13812280 is an apocalyptic number.

13812280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13812280 is an abundant number, since it is smaller than the sum of its proper divisors (17265440).

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

13812280 is a wasteful number, since it uses less digits than its factorization.

13812280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345318 (or 345314 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 13812280 is about 3716.4875891088. The cubic root of 13812280 is about 239.9321567498.

The spelling of 13812280 in words is "thirteen million, eight hundred twelve thousand, two hundred eighty".