445243400 has 72 divisors (see below), whose sum is σ = 1204228170. Its totient is φ = 152651520.

The previous prime is 445243399. The next prime is 445243411. The reversal of 445243400 is 4342544.

It can be written as a sum of positive squares in 3 ways, for example, as 431060644 + 14182756 = 20762^2 + 3766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 445243400.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12917 + ... + 32516.

Almost surely, 2^445243400 is an apocalyptic number.

445243400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445243400 is an abundant number, since it is smaller than the sum of its proper divisors (758984770).

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

445243400 is a wasteful number, since it uses less digits than its factorization.

445243400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45463 (or 45447 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 445243400 is about 21100.7914543507. The cubic root of 445243400 is about 763.5998425295.

Adding to 445243400 its reverse (4342544), we get a palindrome (449585944).

The spelling of 445243400 in words is "four hundred forty-five million, two hundred forty-three thousand, four hundred".