72841878 has 36 divisors (see below), whose sum is σ = 163118124. Its totient is φ = 23491800.

The previous prime is 72841843. The next prime is 72841891. The reversal of 72841878 is 87814827.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15193 + ... + 19403.

It is an arithmetic number, because the mean of its divisors is an integer number (4531059).

Almost surely, 2^72841878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72841878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81559062).

72841878 is an abundant number, since it is smaller than the sum of its proper divisors (90276246).

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

72841878 is a wasteful number, since it uses less digits than its factorization.

72841878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281 (or 4247 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 72841878 is about 8534.7453389073. The cubic root of 72841878 is about 417.6319455788.

The spelling of 72841878 in words is "seventy-two million, eight hundred forty-one thousand, eight hundred seventy-eight".