1157864 has 16 divisors (see below), whose sum is σ = 2194020. Its totient is φ = 572800.

The previous prime is 1157851. The next prime is 1157869. The reversal of 1157864 is 4687511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 240100 = 958^2 + 490^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1157864.

It is not an unprimeable number, because it can be changed into a prime (1157869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92 + ... + 1524.

2^1157864 is an apocalyptic number.

It is an amenable number.

1157864 is a deficient number, since it is larger than the sum of its proper divisors (1036156).

1157864 is a wasteful number, since it uses less digits than its factorization.

1157864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1536 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 1157864 is about 1076.0408914163. The cubic root of 1157864 is about 105.0072255043.

It can be divided in two parts, 11 and 57864, that added together give a palindrome (57875).

The spelling of 1157864 in words is "one million, one hundred fifty-seven thousand, eight hundred sixty-four".