1184640 has 64 divisors (see below), whose sum is σ = 3782160. Its totient is φ = 315392.

The previous prime is 1184609. The next prime is 1184653. The reversal of 1184640 is 464811.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1184640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612 + ... + 2228.

2^1184640 is an apocalyptic number.

1184640 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 1184640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1891080).

1184640 is an abundant number, since it is smaller than the sum of its proper divisors (2597520).

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

1184640 is an equidigital number, since it uses as much as digits as its factorization.

1184640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1184640 is about 1088.4116868171. The cubic root of 1184640 is about 105.8105075428.

The spelling of 1184640 in words is "one million, one hundred eighty-four thousand, six hundred forty".