72286478 has 8 divisors (see below), whose sum is σ = 118287000. Its totient is φ = 32857480.

The previous prime is 72286471. The next prime is 72286481. The reversal of 72286478 is 87468227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72286471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642853 + ... + 1642896.

It is an arithmetic number, because the mean of its divisors is an integer number (14785875).

Almost surely, 2^72286478 is an apocalyptic number.

72286478 is a deficient number, since it is larger than the sum of its proper divisors (46000522).

72286478 is a wasteful number, since it uses less digits than its factorization.

72286478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285762.

The product of its digits is 301056, while the sum is 44.

The square root of 72286478 is about 8502.1454939327. The cubic root of 72286478 is about 416.5677920768.

The spelling of 72286478 in words is "seventy-two million, two hundred eighty-six thousand, four hundred seventy-eight".