1157040 has 60 divisors (see below), whose sum is σ = 3888144. Its totient is φ = 308352.

The previous prime is 1157033. The next prime is 1157053. The reversal of 1157040 is 407511.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84 + ... + 1523.

2^1157040 is an apocalyptic number.

1157040 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 1157040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944072).

1157040 is an abundant number, since it is smaller than the sum of its proper divisors (2731104).

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

1157040 is a wasteful number, since it uses less digits than its factorization.

1157040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1157040 is about 1075.6579381941. The cubic root of 1157040 is about 104.9823099450.

The spelling of 1157040 in words is "one million, one hundred fifty-seven thousand, forty".