4002872445 has 128 divisors (see below), whose sum is σ = 8852820480. Its totient is φ = 1685975040.

The previous prime is 4002872441. The next prime is 4002872561. The reversal of 4002872445 is 5442782004.

4002872445 is a `hidden beast` number, since 400 + 2 + 8 + 7 + 244 + 5 = 666.

It is not a de Polignac number, because 4002872445 - 2² = 4002872441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002872441) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 322087 + ... + 334283.

It is an arithmetic number, because the mean of its divisors is an integer number (69162660).

Almost surely, 2^4002872445 is an apocalyptic number.

4002872445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4002872445 is an abundant number, since it is smaller than the sum of its proper divisors (4849948035).

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

4002872445 is a wasteful number, since it uses less digits than its factorization.

4002872445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12252 (or 12246 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 4002872445 is about 63268.2577996265. The cubic root of 4002872445 is about 1587.7809379005.

The spelling of 4002872445 in words is "four billion, two million, eight hundred seventy-two thousand, four hundred forty-five".