74443400 has 48 divisors (see below), whose sum is σ = 178679040. Its totient is φ = 28814400.

The previous prime is 74443393. The next prime is 74443409. The reversal of 74443400 is 434447.

It is a self number, because there is not a number n which added to its sum of digits gives 74443400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74443409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (3722480).

Almost surely, 2^74443400 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 74443400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89339520).

74443400 is an abundant number, since it is smaller than the sum of its proper divisors (104235640).

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

74443400 is a wasteful number, since it uses less digits than its factorization.

74443400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12054 (or 12045 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 74443400 is about 8628.0588778705. The cubic root of 74443400 is about 420.6705087401.

Adding to 74443400 its reverse (434447), we get a palindrome (74877847).

It can be divided in two parts, 744 and 43400, that added together give a palindrome (44144).

The spelling of 74443400 in words is "seventy-four million, four hundred forty-three thousand, four hundred".