2635240 has 16 divisors (see below), whose sum is σ = 5929380. Its totient is φ = 1054080.

The previous prime is 2635229. The next prime is 2635247. The reversal of 2635240 is 425362.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2630884 + 4356 = 1622^2 + 66^2 .

It is not an unprimeable number, because it can be changed into a prime (2635247) 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, 32901 + ... + 32980.

2^2635240 is an apocalyptic number.

2635240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2635240 is an abundant number, since it is smaller than the sum of its proper divisors (3294140).

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

2635240 is a wasteful number, since it uses less digits than its factorization.

2635240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65892 (or 65888 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2635240 is about 1623.3422313240. The cubic root of 2635240 is about 138.1253499442.

The spelling of 2635240 in words is "two million, six hundred thirty-five thousand, two hundred forty".