72118470 has 32 divisors (see below), whose sum is σ = 175926240. Its totient is φ = 18915840.

The previous prime is 72118457. The next prime is 72118483. The reversal of 72118470 is 7481127.

It is an interprime number because it is at equal distance from previous prime (72118457) and next prime (72118483).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17875 + ... + 21534.

It is an arithmetic number, because the mean of its divisors is an integer number (5497695).

Almost surely, 2^72118470 is an apocalyptic number.

72118470 is an abundant number, since it is smaller than the sum of its proper divisors (103807770).

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

72118470 is a wasteful number, since it uses less digits than its factorization.

72118470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39480.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 72118470 is about 8492.2594166688. The cubic root of 72118470 is about 416.2448132171.

Adding to 72118470 its reverse (7481127), we get a palindrome (79599597).

It can be divided in two parts, 721 and 18470, that added together give a palindrome (19191).

The spelling of 72118470 in words is "seventy-two million, one hundred eighteen thousand, four hundred seventy".