446421728 has 24 divisors (see below), whose sum is σ = 884166192. Its totient is φ = 221871616.

The previous prime is 446421727. The next prime is 446421733. The reversal of 446421728 is 827124644.

It is a junction number, because it is equal to n+sod(n) for n = 446421691 and 446421700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446421727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36425 + ... + 47112.

It is an arithmetic number, because the mean of its divisors is an integer number (36840258).

Almost surely, 2^446421728 is an apocalyptic number.

It is an amenable number.

446421728 is a deficient number, since it is larger than the sum of its proper divisors (437744464).

446421728 is a wasteful number, since it uses less digits than its factorization.

446421728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83714 (or 83706 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 446421728 is about 21128.6944225146. The cubic root of 446421728 is about 764.2728665414.

The spelling of 446421728 in words is "four hundred forty-six million, four hundred twenty-one thousand, seven hundred twenty-eight".