74423000 has 64 divisors (see below), whose sum is σ = 183362400. Its totient is φ = 28195200.

The previous prime is 74422979. The next prime is 74423003. The reversal of 74423000 is 32447.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74423003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17042 + ... + 20958.

Almost surely, 2^74423000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91681200).

74423000 is an abundant number, since it is smaller than the sum of its proper divisors (108939400).

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

74423000 is a wasteful number, since it uses less digits than its factorization.

74423000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957 (or 3943 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 74423000 is about 8626.8766074403. The cubic root of 74423000 is about 420.6320792649.

Adding to 74423000 its reverse (32447), we get a palindrome (74455447).

The spelling of 74423000 in words is "seventy-four million, four hundred twenty-three thousand".