78625800 has 324 divisors, whose sum is σ = 306318285. Its totient is φ = 18057600.

The previous prime is 78625787. The next prime is 78625829. The reversal of 78625800 is 852687.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

78625800 is a `hidden beast` number, since 78 + 6 + 2 + 580 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77053284 + 1572516 = 8778^2 + 1254^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6270.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 80 ways as a sum of consecutive naturals, for example, 4138191 + ... + 4138209.

Almost surely, 2^78625800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78625800

78625800 is an abundant number, since it is smaller than the sum of its proper divisors (227692485).

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

78625800 is a wasteful number, since it uses less digits than its factorization.

78625800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 78625800 is about 8867.1190360793. The cubic root of 78625800 is about 428.4054881380.

The spelling of 78625800 in words is "seventy-eight million, six hundred twenty-five thousand, eight hundred".