1157940 has 72 divisors (see below), whose sum is σ = 4018560. Its totient is φ = 264384.

The previous prime is 1157929. The next prime is 1157953. The reversal of 1157940 is 497511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801 + ... + 1719.

2^1157940 is an apocalyptic number.

1157940 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 1157940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2009280).

1157940 is an abundant number, since it is smaller than the sum of its proper divisors (2860620).

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

1157940 is a wasteful number, since it uses less digits than its factorization.

1157940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1157940 is about 1076.0762054799. The cubic root of 1157940 is about 105.0095229458.

1157940 divided by its product of nonzero digits (1260) gives a palindrome (919).

The spelling of 1157940 in words is "one million, one hundred fifty-seven thousand, nine hundred forty".