78080100 has 72 divisors (see below), whose sum is σ = 258191808. Its totient is φ = 17846400.

The previous prime is 78080089. The next prime is 78080141. The reversal of 78080100 is 108087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16491 + ... + 20690.

Almost surely, 2^78080100 is an apocalyptic number.

78080100 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78080100 is an abundant number, since it is smaller than the sum of its proper divisors (180111708).

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

78080100 is a wasteful number, since it uses less digits than its factorization.

78080100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37205 (or 37198 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 78080100 is about 8836.2944722321. The cubic root of 78080100 is about 427.4120745270.

Adding to 78080100 its reverse (108087), we get a palindrome (78188187).

The spelling of 78080100 in words is "seventy-eight million, eighty thousand, one hundred".