72287373 has 4 divisors (see below), whose sum is σ = 96383168. Its totient is φ = 48191580.

The previous prime is 72287339. The next prime is 72287393. The reversal of 72287373 is 37378227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72287373 - 2⁶ = 72287309 is a prime.

It is a super-2 number, since 2×72287373² = 10450928590482258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72287393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12047893 + ... + 12047898.

It is an arithmetic number, because the mean of its divisors is an integer number (24095792).

Almost surely, 2^72287373 is an apocalyptic number.

It is an amenable number.

72287373 is a deficient number, since it is larger than the sum of its proper divisors (24095795).

72287373 is a wasteful number, since it uses less digits than its factorization.

72287373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24095794.

The product of its digits is 98784, while the sum is 39.

The square root of 72287373 is about 8502.1981275433. The cubic root of 72287373 is about 416.5695112855.

The spelling of 72287373 in words is "seventy-two million, two hundred eighty-seven thousand, three hundred seventy-three".