73132405 has 4 divisors (see below), whose sum is σ = 87758892. Its totient is φ = 58505920.

The previous prime is 73132399. The next prime is 73132427. The reversal of 73132405 is 50423137.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32695524 + 40436881 = 5718^2 + 6359^2 .

It is not a de Polignac number, because 73132405 - 2⁵ = 73132373 is a prime.

It is a super-2 number, since 2×73132405² = 10696697322168050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73132405.

It is a congruent number.

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, 7313236 + ... + 7313245.

It is an arithmetic number, because the mean of its divisors is an integer number (21939723).

Almost surely, 2^73132405 is an apocalyptic number.

It is an amenable number.

73132405 is a deficient number, since it is larger than the sum of its proper divisors (14626487).

73132405 is a wasteful number, since it uses less digits than its factorization.

73132405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14626486.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 73132405 is about 8551.7486515917. The cubic root of 73132405 is about 418.1864452931.

It can be divided in two parts, 73132 and 405, that added together give a palindrome (73537).

The spelling of 73132405 in words is "seventy-three million, one hundred thirty-two thousand, four hundred five".