1157878 has 8 divisors (see below), whose sum is σ = 1783872. Its totient is φ = 563256.

The previous prime is 1157873. The next prime is 1157899. The reversal of 1157878 is 8787511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157873) 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, 7750 + ... + 7897.

It is an arithmetic number, because the mean of its divisors is an integer number (222984).

2^1157878 is an apocalyptic number.

1157878 is a deficient number, since it is larger than the sum of its proper divisors (625994).

1157878 is a wasteful number, since it uses less digits than its factorization.

1157878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15686.

The product of its digits is 15680, while the sum is 37.

The square root of 1157878 is about 1076.0473967256. The cubic root of 1157878 is about 105.0076487248.

The spelling of 1157878 in words is "one million, one hundred fifty-seven thousand, eight hundred seventy-eight".