1157392 has 10 divisors (see below), whose sum is σ = 2242478. Its totient is φ = 578688.

The previous prime is 1157381. The next prime is 1157393. The reversal of 1157392 is 2937511.

It can be written as a sum of positive squares in only one way, i.e., 891136 + 266256 = 944^2 + 516^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157392.

It is not an unprimeable number, because it can be changed into a prime (1157393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36153 + ... + 36184.

2^1157392 is an apocalyptic number.

It is an amenable number.

1157392 is a deficient number, since it is larger than the sum of its proper divisors (1085086).

1157392 is an equidigital number, since it uses as much as digits as its factorization.

1157392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72345 (or 72339 counting only the distinct ones).

The product of its digits is 1890, while the sum is 28.

The square root of 1157392 is about 1075.8215465401. The cubic root of 1157392 is about 104.9929549317.

The spelling of 1157392 in words is "one million, one hundred fifty-seven thousand, three hundred ninety-two".