78010100 has 36 divisors (see below), whose sum is σ = 193466784. Its totient is φ = 26746080.

The previous prime is 78010099. The next prime is 78010133. The reversal of 78010100 is 101087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55022 + ... + 56421.

Almost surely, 2^78010100 is an apocalyptic number.

78010100 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78010100 is an abundant number, since it is smaller than the sum of its proper divisors (115456684).

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

78010100 is a wasteful number, since it uses less digits than its factorization.

78010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111464 (or 111457 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 78010100 is about 8832.3326477211. The cubic root of 78010100 is about 427.2843091912.

Adding to 78010100 its reverse (101087), we get a palindrome (78111187).

The spelling of 78010100 in words is "seventy-eight million, ten thousand, one hundred".