73994278 has 4 divisors (see below), whose sum is σ = 110991420. Its totient is φ = 36997138.

The previous prime is 73994233. The next prime is 73994279. The reversal of 73994278 is 87249937.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73994279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18498568 + ... + 18498571.

It is an arithmetic number, because the mean of its divisors is an integer number (27747855).

Almost surely, 2^73994278 is an apocalyptic number.

73994278 is a deficient number, since it is larger than the sum of its proper divisors (36997142).

73994278 is a wasteful number, since it uses less digits than its factorization.

73994278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36997141.

The product of its digits is 762048, while the sum is 49.

The square root of 73994278 is about 8601.9926761187. The cubic root of 73994278 is about 419.8228239843.

The spelling of 73994278 in words is "seventy-three million, nine hundred ninety-four thousand, two hundred seventy-eight".