78619536 has 60 divisors (see below), whose sum is σ = 222842880. Its totient is φ = 25871040.

The previous prime is 78619517. The next prime is 78619537. The reversal of 78619536 is 63591687.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78619491 and 78619500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78619537) 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 11 ways as a sum of consecutive naturals, for example, 7921 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (3714048).

Almost surely, 2^78619536 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 78619536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111421440).

78619536 is an abundant number, since it is smaller than the sum of its proper divisors (144223344).

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

78619536 is a wasteful number, since it uses less digits than its factorization.

78619536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004 (or 6995 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 78619536 is about 8866.7658139820. The cubic root of 78619536 is about 428.3941110275.

The spelling of 78619536 in words is "seventy-eight million, six hundred nineteen thousand, five hundred thirty-six".