78200988 has 24 divisors (see below), whose sum is σ = 183186192. Its totient is φ = 25964544.

The previous prime is 78200987. The next prime is 78201001. The reversal of 78200988 is 88900287.

It is a happy number.

It is a super-2 number, since 2×78200988² = 12230789048352288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78200987) 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, 9595 + ... + 15762.

It is an arithmetic number, because the mean of its divisors is an integer number (7632758).

Almost surely, 2^78200988 is an apocalyptic number.

It is an amenable number.

78200988 is an abundant number, since it is smaller than the sum of its proper divisors (104985204).

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

78200988 is a wasteful number, since it uses less digits than its factorization.

78200988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25621 (or 25619 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 78200988 is about 8843.1322505094. The cubic root of 78200988 is about 427.6325419195.

The spelling of 78200988 in words is "seventy-eight million, two hundred thousand, nine hundred eighty-eight".