72143396 has 18 divisors (see below), whose sum is σ = 136710882. Its totient is φ = 33296640.

The previous prime is 72143369. The next prime is 72143411. The reversal of 72143396 is 69334127.

It can be written as a sum of positive squares in 3 ways, for example, as 504100 + 71639296 = 710^2 + 8464^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52685 + ... + 54036.

It is an arithmetic number, because the mean of its divisors is an integer number (7595049).

Almost surely, 2^72143396 is an apocalyptic number.

It is an amenable number.

72143396 is a deficient number, since it is larger than the sum of its proper divisors (64567486).

72143396 is a wasteful number, since it uses less digits than its factorization.

72143396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106751 (or 106736 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

The square root of 72143396 is about 8493.7268616315. The cubic root of 72143396 is about 416.2927626681.

The spelling of 72143396 in words is "seventy-two million, one hundred forty-three thousand, three hundred ninety-six".