78844902 has 16 divisors (see below), whose sum is σ = 158932992. Its totient is φ = 26074440.

The previous prime is 78844901. The next prime is 78844921. The reversal of 78844902 is 20944887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78844901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50974 + ... + 52497.

It is an arithmetic number, because the mean of its divisors is an integer number (9933312).

Almost surely, 2^78844902 is an apocalyptic number.

78844902 is an abundant number, since it is smaller than the sum of its proper divisors (80088090).

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

78844902 is a wasteful number, since it uses less digits than its factorization.

78844902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103603.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 78844902 is about 8879.4651865977. The cubic root of 78844902 is about 428.8030567269.

The spelling of 78844902 in words is "seventy-eight million, eight hundred forty-four thousand, nine hundred two".