1157340 has 24 divisors (see below), whose sum is σ = 3240720. Its totient is φ = 308608.

The previous prime is 1157339. The next prime is 1157341. The reversal of 1157340 is 437511.

It is an interprime number because it is at equal distance from previous prime (1157339) and next prime (1157341).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157341) 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, 9585 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (135030).

2^1157340 is an apocalyptic number.

1157340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157340 is an abundant number, since it is smaller than the sum of its proper divisors (2083380).

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

1157340 is a wasteful number, since it uses less digits than its factorization.

1157340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19301 (or 19299 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1157340 is about 1075.7973786917. The cubic root of 1157340 is about 104.9913825127.

The spelling of 1157340 in words is "one million, one hundred fifty-seven thousand, three hundred forty".