11642440 has 32 divisors (see below), whose sum is σ = 27576000. Its totient is φ = 4411584.

The previous prime is 11642429. The next prime is 11642443. The reversal of 11642440 is 4424611.

It is not an unprimeable number, because it can be changed into a prime (11642443) 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, 6900 + ... + 8419.

It is an arithmetic number, because the mean of its divisors is an integer number (861750).

Almost surely, 2^11642440 is an apocalyptic number.

11642440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11642440 is an abundant number, since it is smaller than the sum of its proper divisors (15933560).

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

11642440 is a wasteful number, since it uses less digits than its factorization.

11642440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15349 (or 15345 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 11642440 is about 3412.1019914416. The cubic root of 11642440 is about 226.6459708132.

The spelling of 11642440 in words is "eleven million, six hundred forty-two thousand, four hundred forty".