74447400 has 96 divisors (see below), whose sum is σ = 232842240. Its totient is φ = 19676160.

The previous prime is 74447393. The next prime is 74447419. The reversal of 74447400 is 474447.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75712 + ... + 76688.

It is an arithmetic number, because the mean of its divisors is an integer number (2425440).

Almost surely, 2^74447400 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 74447400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116421120).

74447400 is an abundant number, since it is smaller than the sum of its proper divisors (158394840).

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

74447400 is a wasteful number, since it uses less digits than its factorization.

74447400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 74447400 is about 8628.2906766057. The cubic root of 74447400 is about 420.6780431080.

It can be divided in two parts, 74447 and 400, that added together give a palindrome (74847).

The spelling of 74447400 in words is "seventy-four million, four hundred forty-seven thousand, four hundred".