72118402 has 16 divisors (see below), whose sum is σ = 111355200. Its totient is φ = 35004528.

The previous prime is 72118367. The next prime is 72118427. The reversal of 72118402 is 20481127.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43513 + ... + 45139.

It is an arithmetic number, because the mean of its divisors is an integer number (6959700).

Almost surely, 2^72118402 is an apocalyptic number.

72118402 is a deficient number, since it is larger than the sum of its proper divisors (39236798).

72118402 is a wasteful number, since it uses less digits than its factorization.

72118402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 72118402 is about 8492.2554130219. The cubic root of 72118402 is about 416.2446823923.

Adding to 72118402 its reverse (20481127), we get a palindrome (92599529).

The spelling of 72118402 in words is "seventy-two million, one hundred eighteen thousand, four hundred two".