73994388 has 48 divisors (see below), whose sum is σ = 186626496. Its totient is φ = 22682880.

The previous prime is 73994383. The next prime is 73994407. The reversal of 73994388 is 88349937.

It is a self number, because there is not a number n which added to its sum of digits gives 73994388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73994383) 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, 50920 + ... + 52352.

It is an arithmetic number, because the mean of its divisors is an integer number (3888052).

Almost surely, 2^73994388 is an apocalyptic number.

73994388 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73994388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93313248).

73994388 is an abundant number, since it is smaller than the sum of its proper divisors (112632108).

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

73994388 is a wasteful number, since it uses less digits than its factorization.

73994388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1782 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 73994388 is about 8601.9990699837. Note that the first 3 decimals coincide. The cubic root of 73994388 is about 419.8230320206.

The spelling of 73994388 in words is "seventy-three million, nine hundred ninety-four thousand, three hundred eighty-eight".