78612282 has 80 divisors (see below), whose sum is σ = 202954752. Its totient is φ = 22278240.

The previous prime is 78612277. The next prime is 78612283. The reversal of 78612282 is 28221687.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78612283) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 205063 + ... + 205445.

Almost surely, 2^78612282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78612282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101477376).

78612282 is an abundant number, since it is smaller than the sum of its proper divisors (124342470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78612282 is a wasteful number, since it uses less digits than its factorization.

78612282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 576 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 78612282 is about 8866.3567489697. The cubic root of 78612282 is about 428.3809350553.

The spelling of 78612282 in words is "seventy-eight million, six hundred twelve thousand, two hundred eighty-two".