945391872 has 72 divisors (see below), whose sum is σ = 2597351680. Its totient is φ = 304957440.

The previous prime is 945391861. The next prime is 945391877. The reversal of 945391872 is 278193549.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (945391877) 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, 3954 + ... + 43662.

Almost surely, 2^945391872 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 945391872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298675840).

945391872 is an abundant number, since it is smaller than the sum of its proper divisors (1651959808).

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

945391872 is a wasteful number, since it uses less digits than its factorization.

945391872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39759 (or 39745 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 945391872 is about 30747.2254358015. The cubic root of 945391872 is about 981.4555186813.

The spelling of 945391872 in words is "nine hundred forty-five million, three hundred ninety-one thousand, eight hundred seventy-two".