72386285 has 4 divisors (see below), whose sum is σ = 86863548. Its totient is φ = 57909024.

The previous prime is 72386273. The next prime is 72386299. The reversal of 72386285 is 58268327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41705764 + 30680521 = 6458^2 + 5539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72386285 is a prime.

It is a super-2 number, since 2×72386285² = 10479548512202450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7238624 + ... + 7238633.

It is an arithmetic number, because the mean of its divisors is an integer number (21715887).

Almost surely, 2^72386285 is an apocalyptic number.

It is an amenable number.

72386285 is a deficient number, since it is larger than the sum of its proper divisors (14477263).

72386285 is a wasteful number, since it uses less digits than its factorization.

72386285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14477262.

The product of its digits is 161280, while the sum is 41.

The square root of 72386285 is about 8508.0129877663. The cubic root of 72386285 is about 416.7594243267.

The spelling of 72386285 in words is "seventy-two million, three hundred eighty-six thousand, two hundred eighty-five".