981145472 has 32 divisors (see below), whose sum is σ = 1986684600. Its totient is φ = 482526720.

The previous prime is 981145471. The next prime is 981145493. The reversal of 981145472 is 274541189.

981145472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×981145472² = 1925292874452205568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981145471) 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, 55022 + ... + 70637.

Almost surely, 2^981145472 is an apocalyptic number.

It is an amenable number.

981145472 is an abundant number, since it is smaller than the sum of its proper divisors (1005539128).

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

981145472 is a wasteful number, since it uses less digits than its factorization.

981145472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125734 (or 125722 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 981145472 is about 31323.2417224016. The cubic root of 981145472 is about 993.6752390681.

The spelling of 981145472 in words is "nine hundred eighty-one million, one hundred forty-five thousand, four hundred seventy-two".