844157072 has 40 divisors (see below), whose sum is σ = 1832477952. Its totient is φ = 373334400.

The previous prime is 844157071. The next prime is 844157081. The reversal of 844157072 is 270751448.

It is a super-2 number, since 2×844157072² = 1425202324415226368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (844157071) 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, 58304 + ... + 71327.

Almost surely, 2^844157072 is an apocalyptic number.

It is an amenable number.

844157072 is an abundant number, since it is smaller than the sum of its proper divisors (988320880).

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

844157072 is a wasteful number, since it uses less digits than its factorization.

844157072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129687 (or 129681 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 844157072 is about 29054.3812875098. The cubic root of 844157072 is about 945.0927270133.

The spelling of 844157072 in words is "eight hundred forty-four million, one hundred fifty-seven thousand, seventy-two".