73404481 has 4 divisors (see below), whose sum is σ = 75935700. Its totient is φ = 70873264.

The previous prime is 73404479. The next prime is 73404563. The reversal of 73404481 is 18440437.

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 15872256 + 57532225 = 3984^2 + 7585^2 .

It is a cyclic number.

It is not a de Polignac number, because 73404481 - 2¹ = 73404479 is a prime.

It is a super-2 number, since 2×73404481² = 10776435661758722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73404281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265566 + ... + 1265623.

It is an arithmetic number, because the mean of its divisors is an integer number (18983925).

Almost surely, 2^73404481 is an apocalyptic number.

It is an amenable number.

73404481 is a deficient number, since it is larger than the sum of its proper divisors (2531219).

73404481 is a wasteful number, since it uses less digits than its factorization.

73404481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531218.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 73404481 is about 8567.6415074395. The cubic root of 73404481 is about 418.7043994006.

The spelling of 73404481 in words is "seventy-three million, four hundred four thousand, four hundred eighty-one".