918868272 has 160 divisors (see below), whose sum is σ = 2948382720. Its totient is φ = 240641280.

The previous prime is 918868271. The next prime is 918868289. The reversal of 918868272 is 272868819.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (918868271) by changing a digit.

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, 195583 + ... + 200225.

It is an arithmetic number, because the mean of its divisors is an integer number (18427392).

Almost surely, 2^918868272 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 918868272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474191360).

918868272 is an abundant number, since it is smaller than the sum of its proper divisors (2029514448).

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

918868272 is a wasteful number, since it uses less digits than its factorization.

918868272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711 (or 4705 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 918868272 is about 30312.8400517009. The cubic root of 918868272 is about 972.1898560535.

The spelling of 918868272 in words is "nine hundred eighteen million, eight hundred sixty-eight thousand, two hundred seventy-two".