73400818 has 12 divisors (see below), whose sum is σ = 111156570. Its totient is φ = 36351936.

The previous prime is 73400807. The next prime is 73400851. The reversal of 73400818 is 81800437.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 73153809 + 247009 = 8553^2 + 497^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73400818.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22218 + ... + 25306.

Almost surely, 2^73400818 is an apocalyptic number.

73400818 is a deficient number, since it is larger than the sum of its proper divisors (37755752).

73400818 is a wasteful number, since it uses less digits than its factorization.

73400818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309 (or 3200 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 73400818 is about 8567.4277353241. The cubic root of 73400818 is about 418.6974346136.

The spelling of 73400818 in words is "seventy-three million, four hundred thousand, eight hundred eighteen".