73449400 has 48 divisors (see below), whose sum is σ = 171361800. Its totient is φ = 29278080.

The previous prime is 73449379. The next prime is 73449413. The reversal of 73449400 is 494437.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88186 + ... + 89014.

Almost surely, 2^73449400 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 73449400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85680900).

73449400 is an abundant number, since it is smaller than the sum of its proper divisors (97912400).

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

73449400 is a wasteful number, since it uses less digits than its factorization.

73449400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 73449400 is about 8570.2625397359. The cubic root of 73449400 is about 418.7897890461.

The spelling of 73449400 in words is "seventy-three million, four hundred forty-nine thousand, four hundred".