2431280 has 20 divisors (see below), whose sum is σ = 5652912. Its totient is φ = 972480.

The previous prime is 2431279. The next prime is 2431283. The reversal of 2431280 is 821342.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2431280² = 11822244876800, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2431283) 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, 15116 + ... + 15275.

2^2431280 is an apocalyptic number.

2431280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2431280 is an abundant number, since it is smaller than the sum of its proper divisors (3221632).

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

2431280 is a wasteful number, since it uses less digits than its factorization.

2431280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30404 (or 30398 counting only the distinct ones).

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

The square root of 2431280 is about 1559.2562329521. The cubic root of 2431280 is about 134.4657440066.

The spelling of 2431280 in words is "two million, four hundred thirty-one thousand, two hundred eighty".