1157740 has 24 divisors (see below), whose sum is σ = 2458512. Its totient is φ = 457920.

The previous prime is 1157729. The next prime is 1157747. The reversal of 1157740 is 477511.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1157747) 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, 1870 + ... + 2410.

It is an arithmetic number, because the mean of its divisors is an integer number (102438).

2^1157740 is an apocalyptic number.

1157740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157740 is an abundant number, since it is smaller than the sum of its proper divisors (1300772).

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

1157740 is a wasteful number, since it uses less digits than its factorization.

1157740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 1157740 is about 1075.9832712454. The cubic root of 1157740 is about 105.0034768312.

The spelling of 1157740 in words is "one million, one hundred fifty-seven thousand, seven hundred forty".