72044670 has 16 divisors (see below), whose sum is σ = 172907280. Its totient is φ = 19211904.

The previous prime is 72044663. The next prime is 72044677. The reversal of 72044670 is 7644027.

It is an interprime number because it is at equal distance from previous prime (72044663) and next prime (72044677).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2401489 = 72044670 / (7 + 2 + 0 + 4 + 4 + 6 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72044677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200715 + ... + 1200774.

It is an arithmetic number, because the mean of its divisors is an integer number (10806705).

Almost surely, 2^72044670 is an apocalyptic number.

72044670 is an abundant number, since it is smaller than the sum of its proper divisors (100862610).

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

72044670 is a wasteful number, since it uses less digits than its factorization.

72044670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401499.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 72044670 is about 8487.9131710922. The cubic root of 72044670 is about 416.1027814022.

Adding to 72044670 its reverse (7644027), we get a palindrome (79688697).

The spelling of 72044670 in words is "seventy-two million, forty-four thousand, six hundred seventy".