1157290 has 16 divisors (see below), whose sum is σ = 2193120. Its totient is φ = 438480.

The previous prime is 1157279. The next prime is 1157293. The reversal of 1157290 is 927511.

It is not an unprimeable number, because it can be changed into a prime (1157293) 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, 2856 + ... + 3235.

It is an arithmetic number, because the mean of its divisors is an integer number (137070).

2^1157290 is an apocalyptic number.

1157290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1157290 is a deficient number, since it is larger than the sum of its proper divisors (1035830).

1157290 is a wasteful number, since it uses less digits than its factorization.

1157290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 1157290 is about 1075.7741398639. The cubic root of 1157290 is about 104.9898705270.

The spelling of 1157290 in words is "one million, one hundred fifty-seven thousand, two hundred ninety".