72357243 has 16 divisors (see below), whose sum is σ = 112340736. Its totient is φ = 40566240.

The previous prime is 72357227. The next prime is 72357269. The reversal of 72357243 is 34275327.

It is not a de Polignac number, because 72357243 - 2⁴ = 72357227 is a prime.

It is a super-2 number, since 2×72357243² = 10471141229122098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72357203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31393 + ... + 33618.

It is an arithmetic number, because the mean of its divisors is an integer number (7021296).

Almost surely, 2^72357243 is an apocalyptic number.

72357243 is a deficient number, since it is larger than the sum of its proper divisors (39983493).

72357243 is a wasteful number, since it uses less digits than its factorization.

72357243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65074.

The product of its digits is 35280, while the sum is 33.

The square root of 72357243 is about 8506.3060725558. The cubic root of 72357243 is about 416.7036810495.

The spelling of 72357243 in words is "seventy-two million, three hundred fifty-seven thousand, two hundred forty-three".