72196678 has 16 divisors (see below), whose sum is σ = 114439680. Its totient is φ = 34090056.

The previous prime is 72196673. The next prime is 72196679. The reversal of 72196678 is 87669127.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72196673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6300 + ... + 13567.

It is an arithmetic number, because the mean of its divisors is an integer number (7152480).

Almost surely, 2^72196678 is an apocalyptic number.

72196678 is a deficient number, since it is larger than the sum of its proper divisors (42243002).

72196678 is a wasteful number, since it uses less digits than its factorization.

72196678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19971.

The product of its digits is 254016, while the sum is 46.

The square root of 72196678 is about 8496.8628328342. The cubic root of 72196678 is about 416.3952227398.

The spelling of 72196678 in words is "seventy-two million, one hundred ninety-six thousand, six hundred seventy-eight".