11634440 has 16 divisors (see below), whose sum is σ = 26177580. Its totient is φ = 4653760.

The previous prime is 11634433. The next prime is 11634449. The reversal of 11634440 is 4443611.

It can be written as a sum of positive squares in 2 ways, for example, as 9897316 + 1737124 = 3146^2 + 1318^2 .

It is a super-2 number, since 2×11634440² = 270720388227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11634449) 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, 145391 + ... + 145470.

Almost surely, 2^11634440 is an apocalyptic number.

11634440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11634440 is an abundant number, since it is smaller than the sum of its proper divisors (14543140).

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

11634440 is a wasteful number, since it uses less digits than its factorization.

11634440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290872 (or 290868 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 11634440 is about 3410.9294920886. The cubic root of 11634440 is about 226.5940463247.

The spelling of 11634440 in words is "eleven million, six hundred thirty-four thousand, four hundred forty".