78722802 has 12 divisors (see below), whose sum is σ = 170566110. Its totient is φ = 26240928.

The previous prime is 78722773. The next prime is 78722821. The reversal of 78722802 is 20822787.

It can be written as a sum of positive squares in only one way, i.e., 47485881 + 31236921 = 6891^2 + 5589^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2186727 + ... + 2186762.

Almost surely, 2^78722802 is an apocalyptic number.

78722802 is an abundant number, since it is smaller than the sum of its proper divisors (91843308).

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

78722802 is a wasteful number, since it uses less digits than its factorization.

78722802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373497 (or 4373494 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 78722802 is about 8872.5871086172. The cubic root of 78722802 is about 428.5815928066.

It can be divided in two parts, 78722 and 802, that added together give a square (79524 = 282²).

The spelling of 78722802 in words is "seventy-eight million, seven hundred twenty-two thousand, eight hundred two".