11499840 has 224 divisors, whose sum is σ = 44622720. Its totient is φ = 2787840.

The previous prime is 11499833. The next prime is 11499841. The reversal of 11499840 is 4899411.

11499840 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11499795 and 11499804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11499841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1045435 + ... + 1045445.

Almost surely, 2^11499840 is an apocalyptic number.

11499840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22311360).

11499840 is an abundant number, since it is smaller than the sum of its proper divisors (33122880).

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

11499840 is an equidigital number, since it uses as much as digits as its factorization.

11499840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 11499840 is about 3391.1414007676. The cubic root of 11499840 is about 225.7168249613.

The spelling of 11499840 in words is "eleven million, four hundred ninety-nine thousand, eight hundred forty".