72789030 has 80 divisors (see below), whose sum is σ = 198563904. Its totient is φ = 19128960.

The previous prime is 72789011. The next prime is 72789037. The reversal of 72789030 is 3098727.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72789037) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 58515 + ... + 59745.

Almost surely, 2^72789030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72789030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99281952).

72789030 is an abundant number, since it is smaller than the sum of its proper divisors (125774874).

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

72789030 is a wasteful number, since it uses less digits than its factorization.

72789030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 72789030 is about 8531.6487269460. The cubic root of 72789030 is about 417.5309214910.

The spelling of 72789030 in words is "seventy-two million, seven hundred eighty-nine thousand, thirty".