73407538 has 8 divisors (see below), whose sum is σ = 110158380. Its totient is φ = 36688080.

The previous prime is 73407527. The next prime is 73407557. The reversal of 73407538 is 83570437.

It can be written as a sum of positive squares in 2 ways, for example, as 71014329 + 2393209 = 8427^2 + 1547^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 73407497 and 73407506.

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, 693 + ... + 12136.

Almost surely, 2^73407538 is an apocalyptic number.

73407538 is a deficient number, since it is larger than the sum of its proper divisors (36750842).

73407538 is a wasteful number, since it uses less digits than its factorization.

73407538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15692.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 73407538 is about 8567.8199094052. The cubic root of 73407538 is about 418.7102117687.

It can be divided in two parts, 7340 and 7538, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 73407538 in words is "seventy-three million, four hundred seven thousand, five hundred thirty-eight".