445704280 has 128 divisors (see below), whose sum is σ = 1215360000. Its totient is φ = 143700480.

The previous prime is 445704271. The next prime is 445704289. The reversal of 445704280 is 82407544.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (445704271) and next prime (445704289).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445704289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1058470 + ... + 1058890.

It is an arithmetic number, because the mean of its divisors is an integer number (9495000).

Almost surely, 2^445704280 is an apocalyptic number.

445704280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445704280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607680000).

445704280 is an abundant number, since it is smaller than the sum of its proper divisors (769655720).

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

445704280 is a wasteful number, since it uses less digits than its factorization.

445704280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 445704280 is about 21111.7095470736. The cubic root of 445704280 is about 763.8632239639.

The spelling of 445704280 in words is "four hundred forty-five million, seven hundred four thousand, two hundred eighty".