78550136 has 24 divisors (see below), whose sum is σ = 171328320. Its totient is φ = 33664176.

The previous prime is 78550133. The next prime is 78550139. The reversal of 78550136 is 63105587.

It is an interprime number because it is at equal distance from previous prime (78550133) and next prime (78550139).

It is a junction number, because it is equal to n+sod(n) for n = 78550096 and 78550105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78550133) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 99800 + ... + 100583.

It is an arithmetic number, because the mean of its divisors is an integer number (7138680).

Almost surely, 2^78550136 is an apocalyptic number.

It is an amenable number.

78550136 is an abundant number, since it is smaller than the sum of its proper divisors (92778184).

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

78550136 is a wasteful number, since it uses less digits than its factorization.

78550136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200403 (or 200392 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 78550136 is about 8862.8514598858. The cubic root of 78550136 is about 428.2680214865.

The spelling of 78550136 in words is "seventy-eight million, five hundred fifty thousand, one hundred thirty-six".