947422872 has 128 divisors (see below), whose sum is σ = 2883168000. Its totient is φ = 285880320.

The previous prime is 947422811. The next prime is 947422919. The reversal of 947422872 is 278224749.

It is a super-2 number, since 2×947422872² = 1795220196777456768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671704 + ... + 673112.

It is an arithmetic number, because the mean of its divisors is an integer number (22524750).

Almost surely, 2^947422872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947422872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441584000).

947422872 is an abundant number, since it is smaller than the sum of its proper divisors (1935745128).

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

947422872 is a wasteful number, since it uses less digits than its factorization.

947422872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718 (or 1708 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 947422872 is about 30780.2350868215. The cubic root of 947422872 is about 982.1578413478.

The spelling of 947422872 in words is "nine hundred forty-seven million, four hundred twenty-two thousand, eight hundred seventy-two".