72030870 has 80 divisors (see below), whose sum is σ = 205115328. Its totient is φ = 18074880.

The previous prime is 72030859. The next prime is 72030899. The reversal of 72030870 is 7803027.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 11155 + ... + 16385.

Almost surely, 2^72030870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72030870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102557664).

72030870 is an abundant number, since it is smaller than the sum of its proper divisors (133084458).

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

72030870 is a wasteful number, since it uses less digits than its factorization.

72030870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5267 (or 5258 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 72030870 is about 8487.1002114974. The cubic root of 72030870 is about 416.0762118445.

Adding to 72030870 its reverse (7803027), we get a palindrome (79833897).

It can be divided in two parts, 72030 and 870, that added together give a square (72900 = 270²).

The spelling of 72030870 in words is "seventy-two million, thirty thousand, eight hundred seventy".