72368478 has 80 divisors (see below), whose sum is σ = 199620960. Its totient is φ = 19082304.

The previous prime is 72368467. The next prime is 72368489. The reversal of 72368478 is 87486327.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72368467) and next prime (72368489).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12288 + ... + 17196.

It is an arithmetic number, because the mean of its divisors is an integer number (2495262).

Almost surely, 2^72368478 is an apocalyptic number.

72368478 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72368478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99810480).

72368478 is an abundant number, since it is smaller than the sum of its proper divisors (127252482).

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

72368478 is a wasteful number, since it uses less digits than its factorization.

72368478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943 (or 4934 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 72368478 is about 8506.9664393366. The cubic root of 72368478 is about 416.7252473013.

The spelling of 72368478 in words is "seventy-two million, three hundred sixty-eight thousand, four hundred seventy-eight".