72246816 has 168 divisors, whose sum is σ = 225857520. Its totient is φ = 22674816.

The previous prime is 72246809. The next prime is 72246827. The reversal of 72246816 is 61864227.

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

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 443151 + ... + 443313.

It is an arithmetic number, because the mean of its divisors is an integer number (1344390).

Almost surely, 2^72246816 is an apocalyptic number.

72246816 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72246816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112928760).

72246816 is an abundant number, since it is smaller than the sum of its proper divisors (153610704).

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

72246816 is a wasteful number, since it uses less digits than its factorization.

72246816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 187 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 72246816 is about 8499.8127038188. The cubic root of 72246816 is about 416.4915909445.

The spelling of 72246816 in words is "seventy-two million, two hundred forty-six thousand, eight hundred sixteen".