11649240 has 48 divisors (see below), whose sum is σ = 37861200. Its totient is φ = 3106368.

The previous prime is 11649227. The next prime is 11649251. The reversal of 11649240 is 4294611.

11649240 is a `hidden beast` number, since 11 + 649 + 2 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15820 + ... + 16539.

It is an arithmetic number, because the mean of its divisors is an integer number (788775).

Almost surely, 2^11649240 is an apocalyptic number.

11649240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11649240 is an abundant number, since it is smaller than the sum of its proper divisors (26211960).

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

11649240 is a wasteful number, since it uses less digits than its factorization.

11649240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32376 (or 32369 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 11649240 is about 3413.0982991997. The cubic root of 11649240 is about 226.6900879297.

It can be divided in two parts, 1164 and 9240, that added together give a square (10404 = 102²).

The spelling of 11649240 in words is "eleven million, six hundred forty-nine thousand, two hundred forty".