73404 has 18 divisors (see below), whose sum is σ = 185640. Its totient is φ = 24456.

The previous prime is 73387. The next prime is 73417. The reversal of 73404 is 40437.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

73404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 984 + ... + 1055.

2⁷³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

73404 is an abundant number, since it is smaller than the sum of its proper divisors (112236).

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

73404 is a wasteful number, since it uses less digits than its factorization.

73404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 73404 is about 270.9317257170. The cubic root of 73404 is about 41.8703484846.

It can be divided in two parts, 73 and 404, that multiplied together give a palindrome (29492).

The spelling of 73404 in words is "seventy-three thousand, four hundred four", and thus it is an iban number.