78100048 has 20 divisors (see below), whose sum is σ = 162959188. Its totient is φ = 36046080.

The previous prime is 78100021. The next prime is 78100097. The reversal of 78100048 is 84000187.

It can be written as a sum of positive squares in 2 ways, for example, as 14227984 + 63872064 = 3772^2 + 7992^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78099989 and 78100025.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 187533 + ... + 187948.

Almost surely, 2^78100048 is an apocalyptic number.

It is an amenable number.

78100048 is an abundant number, since it is smaller than the sum of its proper divisors (84859140).

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

78100048 is a wasteful number, since it uses less digits than its factorization.

78100048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375502 (or 375496 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 78100048 is about 8837.4231538385. The cubic root of 78100048 is about 427.4484700152.

The spelling of 78100048 in words is "seventy-eight million, one hundred thousand, forty-eight".