78195996 has 48 divisors (see below), whose sum is σ = 204314880. Its totient is φ = 25861680.

The previous prime is 78195991. The next prime is 78196003. The reversal of 78195996 is 69959187.

It is a super-2 number, since 2×78195996² = 12229227580864032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78195991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11385 + ... + 16911.

It is an arithmetic number, because the mean of its divisors is an integer number (4256560).

Almost surely, 2^78195996 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 78195996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102157440).

78195996 is an abundant number, since it is smaller than the sum of its proper divisors (126118884).

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

78195996 is a wasteful number, since it uses less digits than its factorization.

78195996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671 (or 5663 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 78195996 is about 8842.8499930735. The cubic root of 78195996 is about 427.6234423453.

The spelling of 78195996 in words is "seventy-eight million, one hundred ninety-five thousand, nine hundred ninety-six".