845424972 has 96 divisors (see below), whose sum is σ = 2539443200. Its totient is φ = 238225536.

The previous prime is 845424971. The next prime is 845424997. The reversal of 845424972 is 279424548.

It is not an unprimeable number, because it can be changed into a prime (845424971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47529 + ... + 62847.

Almost surely, 2^845424972 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 845424972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269721600).

845424972 is an abundant number, since it is smaller than the sum of its proper divisors (1694018228).

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

845424972 is a wasteful number, since it uses less digits than its factorization.

845424972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15412 (or 15404 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 845424972 is about 29076.1925292842. The cubic root of 845424972 is about 945.5656578138.

The spelling of 845424972 in words is "eight hundred forty-five million, four hundred twenty-four thousand, nine hundred seventy-two".