981772288 has 48 divisors (see below), whose sum is σ = 2243535840. Its totient is φ = 420753408.

The previous prime is 981772241. The next prime is 981772289. The reversal of 981772288 is 882277189.

It is not an unprimeable number, because it can be changed into a prime (981772289) 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, 19906 + ... + 48577.

It is an arithmetic number, because the mean of its divisors is an integer number (46740330).

Almost surely, 2^981772288 is an apocalyptic number.

It is an amenable number.

981772288 is an abundant number, since it is smaller than the sum of its proper divisors (1261763552).

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

981772288 is an equidigital number, since it uses as much as digits as its factorization.

981772288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68512 (or 68492 counting only the distinct ones).

The product of its digits is 903168, while the sum is 52.

The square root of 981772288 is about 31333.2457303740. The cubic root of 981772288 is about 993.8868009499.

The spelling of 981772288 in words is "nine hundred eighty-one million, seven hundred seventy-two thousand, two hundred eighty-eight".