2631280 has 40 divisors (see below), whose sum is σ = 6321024. Its totient is φ = 1017600.

The previous prime is 2631271. The next prime is 2631281. The reversal of 2631280 is 821362.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1950 + ... + 3010.

2^2631280 is an apocalyptic number.

2631280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2631280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3160512).

2631280 is an abundant number, since it is smaller than the sum of its proper divisors (3689744).

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

2631280 is a wasteful number, since it uses less digits than its factorization.

2631280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105 (or 1099 counting only the distinct ones).

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

The square root of 2631280 is about 1622.1220669234. The cubic root of 2631280 is about 138.0561278370.

The spelling of 2631280 in words is "two million, six hundred thirty-one thousand, two hundred eighty".