3631240 has 32 divisors (see below), whose sum is σ = 8527680. Its totient is φ = 1388992.

The previous prime is 3631237. The next prime is 3631249. The reversal of 3631240 is 421363.

3631240 = 485² + 486² + ... + 499².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3631249) 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, 1054 + ... + 2893.

It is an arithmetic number, because the mean of its divisors is an integer number (266490).

Almost surely, 2^3631240 is an apocalyptic number.

It is an amenable number.

3631240 is an abundant number, since it is smaller than the sum of its proper divisors (4896440).

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

3631240 is a wasteful number, since it uses less digits than its factorization.

3631240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981 (or 3977 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 3631240 is about 1905.5812761465. The cubic root of 3631240 is about 153.7039344667.

The spelling of 3631240 in words is "three million, six hundred thirty-one thousand, two hundred forty".