73538405 has 8 divisors (see below), whose sum is σ = 88376184. Its totient is φ = 58744000.

The previous prime is 73538389. The next prime is 73538407. The reversal of 73538405 is 50483537.

It can be written as a sum of positive squares in 4 ways, for example, as 18645124 + 54893281 = 4318^2 + 7409^2 .

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

It is not a de Polignac number, because 73538405 - 2⁴ = 73538389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73538407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6986 + ... + 13995.

It is an arithmetic number, because the mean of its divisors is an integer number (11047023).

Almost surely, 2^73538405 is an apocalyptic number.

It is an amenable number.

73538405 is a deficient number, since it is larger than the sum of its proper divisors (14837779).

73538405 is a wasteful number, since it uses less digits than its factorization.

73538405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21687.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 73538405 is about 8575.4536323159. The cubic root of 73538405 is about 418.9588820503.

The spelling of 73538405 in words is "seventy-three million, five hundred thirty-eight thousand, four hundred five".