72518070 has 32 divisors (see below), whose sum is σ = 174332160. Its totient is φ = 19306080.

The previous prime is 72518059. The next prime is 72518071. The reversal of 72518070 is 7081527.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72518071) 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, 20535 + ... + 23805.

It is an arithmetic number, because the mean of its divisors is an integer number (5447880).

Almost surely, 2^72518070 is an apocalyptic number.

72518070 is an abundant number, since it is smaller than the sum of its proper divisors (101814090).

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

72518070 is a wasteful number, since it uses less digits than its factorization.

72518070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 72518070 is about 8515.7542237902. The cubic root of 72518070 is about 417.0121855786.

Adding to 72518070 its reverse (7081527), we get a palindrome (79599597).

The spelling of 72518070 in words is "seventy-two million, five hundred eighteen thousand, seventy".