449728830 has 96 divisors (see below), whose sum is σ = 1212456960. Its totient is φ = 115577280.

The previous prime is 449728819. The next prime is 449728831. The reversal of 449728830 is 38827944.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449728831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 304995 + ... + 306465.

It is an arithmetic number, because the mean of its divisors is an integer number (12629760).

Almost surely, 2^449728830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449728830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606228480).

449728830 is an abundant number, since it is smaller than the sum of its proper divisors (762728130).

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

449728830 is a wasteful number, since it uses less digits than its factorization.

449728830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 449728830 is about 21206.8109342258. The cubic root of 449728830 is about 766.1554754433.

The spelling of 449728830 in words is "four hundred forty-nine million, seven hundred twenty-eight thousand, eight hundred thirty".