7272923136 has 144 divisors (see below), whose sum is σ = 20602420020. Its totient is φ = 2281701376.

The previous prime is 7272923131. The next prime is 7272923159. The reversal of 7272923136 is 6313292727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272923131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 427819000 + ... + 427819016.

Almost surely, 2^7272923136 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 7272923136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10301210010).

7272923136 is an abundant number, since it is smaller than the sum of its proper divisors (13329496884).

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

7272923136 is an frugal number, since it uses more digits than its factorization.

7272923136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 22 counting only the distinct ones).

The product of its digits is 190512, while the sum is 42.

The square root of 7272923136 is about 85281.4348847391. The cubic root of 7272923136 is about 1937.4760048419.

The spelling of 7272923136 in words is "seven billion, two hundred seventy-two million, nine hundred twenty-three thousand, one hundred thirty-six".