1187040 has 48 divisors (see below), whose sum is σ = 3740688. Its totient is φ = 316416.

The previous prime is 1187023. The next prime is 1187047. The reversal of 1187040 is 407811.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 1186998 and 1187016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187047) 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, 757 + ... + 1716.

It is an arithmetic number, because the mean of its divisors is an integer number (77931).

2^1187040 is an apocalyptic number.

1187040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1187040 is an abundant number, since it is smaller than the sum of its proper divisors (2553648).

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

1187040 is a wasteful number, since it uses less digits than its factorization.

1187040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1187040 is about 1089.5136529663. The cubic root of 1187040 is about 105.8819143046.

The spelling of 1187040 in words is "one million, one hundred eighty-seven thousand, forty".