78868902 has 32 divisors (see below), whose sum is σ = 180536832. Its totient is φ = 22500864.

The previous prime is 78868901. The next prime is 78868903. The reversal of 78868902 is 20986887.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78868901) and next prime (78868903).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78868901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50343 + ... + 51885.

It is an arithmetic number, because the mean of its divisors is an integer number (5641776).

Almost surely, 2^78868902 is an apocalyptic number.

78868902 is an abundant number, since it is smaller than the sum of its proper divisors (101667930).

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

78868902 is a wasteful number, since it uses less digits than its factorization.

78868902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 78868902 is about 8880.8165165147. The cubic root of 78868902 is about 428.8465608262.

The spelling of 78868902 in words is "seventy-eight million, eight hundred sixty-eight thousand, nine hundred two".