1157898 has 32 divisors (see below), whose sum is σ = 2787840. Its totient is φ = 313200.

The previous prime is 1157873. The next prime is 1157899. The reversal of 1157898 is 8987511.

It is not an unprimeable number, because it can be changed into a prime (1157899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73 + ... + 1523.

It is an arithmetic number, because the mean of its divisors is an integer number (87120).

2^1157898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1157898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393920).

1157898 is an abundant number, since it is smaller than the sum of its proper divisors (1629942).

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

1157898 is a wasteful number, since it uses less digits than its factorization.

1157898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482.

The product of its digits is 20160, while the sum is 39.

The square root of 1157898 is about 1076.0566899564. The cubic root of 1157898 is about 105.0082533195.

The spelling of 1157898 in words is "one million, one hundred fifty-seven thousand, eight hundred ninety-eight".