72040470 has 32 divisors (see below), whose sum is σ = 173305440. Its totient is φ = 19165440.

The previous prime is 72040459. The next prime is 72040471. The reversal of 72040470 is 7404027.

It is a self number, because there is not a number n which added to its sum of digits gives 72040470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72040471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11226 + ... + 16434.

It is an arithmetic number, because the mean of its divisors is an integer number (5415795).

Almost surely, 2^72040470 is an apocalyptic number.

72040470 is an abundant number, since it is smaller than the sum of its proper divisors (101264970).

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

72040470 is a wasteful number, since it uses less digits than its factorization.

72040470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 72040470 is about 8487.6657568498. The cubic root of 72040470 is about 416.0946953743.

Adding to 72040470 its reverse (7404027), we get a palindrome (79444497).

The spelling of 72040470 in words is "seventy-two million, forty thousand, four hundred seventy".