2631457240 has 32 divisors (see below), whose sum is σ = 6058475280. Its totient is φ = 1028103552.

The previous prime is 2631457211. The next prime is 2631457253. The reversal of 2631457240 is 427541362.

It is a junction number, because it is equal to n+sod(n) for n = 2631457196 and 2631457205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763239 + ... + 766678.

Almost surely, 2^2631457240 is an apocalyptic number.

2631457240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2631457240 is an abundant number, since it is smaller than the sum of its proper divisors (3427018040).

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

2631457240 is a wasteful number, since it uses less digits than its factorization.

2631457240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529971 (or 1529967 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 2631457240 is about 51297.7313338514. The cubic root of 2631457240 is about 1380.5922753485.

The spelling of 2631457240 in words is "two billion, six hundred thirty-one million, four hundred fifty-seven thousand, two hundred forty".