78992802 has 36 divisors (see below), whose sum is σ = 199096326. Its totient is φ = 22569120.

The previous prime is 78992801. The next prime is 78992827. The reversal of 78992802 is 20829987.

It can be written as a sum of positive squares in only one way, i.e., 74494161 + 4498641 = 8631^2 + 2121^2 .

It is a super-4 number, since 4×78992802⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78992801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43899 + ... + 45662.

Almost surely, 2^78992802 is an apocalyptic number.

78992802 is an abundant number, since it is smaller than the sum of its proper divisors (120103524).

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

78992802 is a wasteful number, since it uses less digits than its factorization.

78992802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89583 (or 89573 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 78992802 is about 8887.7894889562. The cubic root of 78992802 is about 429.0710104632.

It can be divided in two parts, 7899 and 2802, that added together give a palindrome (10701).

The spelling of 78992802 in words is "seventy-eight million, nine hundred ninety-two thousand, eight hundred two".