8238904272 has 90 divisors (see below), whose sum is σ = 23515168482. Its totient is φ = 2691891072.

The previous prime is 8238904217. The next prime is 8238904277. The reversal of 8238904272 is 2724098328.

It can be written as a sum of positive squares in only one way, i.e., 7617100176 + 621804096 = 87276^2 + 24936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8238904277) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7929129 + ... + 7930167.

Almost surely, 2^8238904272 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 8238904272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11757584241).

8238904272 is an abundant number, since it is smaller than the sum of its proper divisors (15276264210).

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

8238904272 is a wasteful number, since it uses less digits than its factorization.

8238904272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 8238904272 is about 90768.4100995495. The cubic root of 8238904272 is about 2019.7137352074.

The spelling of 8238904272 in words is "eight billion, two hundred thirty-eight million, nine hundred four thousand, two hundred seventy-two".