11964640 has 24 divisors (see below), whose sum is σ = 28266840. Its totient is φ = 4785792.

The previous prime is 11964613. The next prime is 11964647. The reversal of 11964640 is 4646911.

It is a super-2 number, since 2×11964640² = 286305220659200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11964647) 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, 37230 + ... + 37549.

It is an arithmetic number, because the mean of its divisors is an integer number (1177785).

Almost surely, 2^11964640 is an apocalyptic number.

11964640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11964640 is an abundant number, since it is smaller than the sum of its proper divisors (16302200).

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

11964640 is an equidigital number, since it uses as much as digits as its factorization.

11964640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74794 (or 74786 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 11964640 is about 3458.9940734266. The cubic root of 11964640 is about 228.7177545199.

The spelling of 11964640 in words is "eleven million, nine hundred sixty-four thousand, six hundred forty".