74404 has 24 divisors (see below), whose sum is σ = 151200. Its totient is φ = 31680.
The previous prime is 74383. The next prime is 74411. The reversal of 74404 is 40447.
74404 = T71 + T72 + ... + T92.
It is a happy number.
74404 is nontrivially palindromic in base 3.
It is a Harshad number since it is a multiple of its sum of digits (19).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792 + ... + 880.
It is an arithmetic number, because the mean of its divisors is an integer number (6300).
274404 is an apocalyptic number.
It is an amenable number.
74404 is an abundant number, since it is smaller than the sum of its proper divisors (76796).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75600).
74404 is a wasteful number, since it uses less digits than its factorization.
74404 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 123 (or 121 counting only the distinct ones).
The product of its (nonzero) digits is 448, while the sum is 19.
The square root of 74404 is about 272.7709661969. The cubic root of 74404 is about 42.0596280790.
74404 divided by its sum of digits (19) gives a triangular number (3916 = T88).
The spelling of 74404 in words is "seventy-four thousand, four hundred four", and thus it is an iban number.
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