78633036 has 72 divisors (see below), whose sum is σ = 207807600. Its totient is φ = 25038720.

The previous prime is 78633031. The next prime is 78633091. The reversal of 78633036 is 63033687.

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

It is not an unprimeable number, because it can be changed into a prime (78633031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113451 + ... + 114141.

Almost surely, 2^78633036 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 78633036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103903800).

78633036 is an abundant number, since it is smaller than the sum of its proper divisors (129174564).

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

78633036 is a wasteful number, since it uses less digits than its factorization.

78633036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 78633036 is about 8867.5270509878. The cubic root of 78633036 is about 428.4186299101.

The spelling of 78633036 in words is "seventy-eight million, six hundred thirty-three thousand, thirty-six".