72386284 has 12 divisors (see below), whose sum is σ = 126784000. Its totient is φ = 36162288.

The previous prime is 72386273. The next prime is 72386299. The reversal of 72386284 is 48268327.

It is a super-3 number, since 3×72386284³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 1959 + ... + 12190.

Almost surely, 2^72386284 is an apocalyptic number.

It is an amenable number.

72386284 is a deficient number, since it is larger than the sum of its proper divisors (54397716).

72386284 is a wasteful number, since it uses less digits than its factorization.

72386284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432 (or 15430 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 72386284 is about 8508.0129289982. The cubic root of 72386284 is about 416.7594224075.

The spelling of 72386284 in words is "seventy-two million, three hundred eighty-six thousand, two hundred eighty-four".