73281738 has 8 divisors (see below), whose sum is σ = 146563488. Its totient is φ = 24427244.

The previous prime is 73281721. The next prime is 73281763. The reversal of 73281738 is 83718237.

It is a sphenic number, since it is the product of 3 distinct primes.

73281738 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 73281696 and 73281705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6106806 + ... + 6106817.

It is an arithmetic number, because the mean of its divisors is an integer number (18320436).

Almost surely, 2^73281738 is an apocalyptic number.

73281738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

73281738 is a wasteful number, since it uses less digits than its factorization.

73281738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12213628.

The product of its digits is 56448, while the sum is 39.

The square root of 73281738 is about 8560.4753372695. The cubic root of 73281738 is about 418.4708909209.

The spelling of 73281738 in words is "seventy-three million, two hundred eighty-one thousand, seven hundred thirty-eight".