74463400 has 144 divisors (see below), whose sum is σ = 202604220. Its totient is φ = 25344000.

The previous prime is 74463391. The next prime is 74463407. The reversal of 74463400 is 436447.

It can be written as a sum of positive squares in 6 ways, for example, as 14152644 + 60310756 = 3762^2 + 7766^2 .

It is not an unprimeable number, because it can be changed into a prime (74463407) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 411310 + ... + 411490.

Almost surely, 2^74463400 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 74463400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101302110).

74463400 is an abundant number, since it is smaller than the sum of its proper divisors (128140820).

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

74463400 is a wasteful number, since it uses less digits than its factorization.

74463400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 74463400 is about 8629.2178092803. The cubic root of 74463400 is about 420.7081778813.

Adding to 74463400 its reverse (436447), we get a palindrome (74899847).

The spelling of 74463400 in words is "seventy-four million, four hundred sixty-three thousand, four hundred".