11749440 has 56 divisors (see below), whose sum is σ = 37307520. Its totient is φ = 3132928.

The previous prime is 11749427. The next prime is 11749447. The reversal of 11749440 is 4494711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11749398 and 11749407.

It is not an unprimeable number, because it can be changed into a prime (11749447) 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, 5160 + ... + 7079.

Almost surely, 2^11749440 is an apocalyptic number.

11749440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11749440 is an abundant number, since it is smaller than the sum of its proper divisors (25558080).

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

11749440 is a wasteful number, since it uses less digits than its factorization.

11749440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12259 (or 12249 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 11749440 is about 3427.7456148320. The cubic root of 11749440 is about 227.3381854603.

The spelling of 11749440 in words is "eleven million, seven hundred forty-nine thousand, four hundred forty".