441221628 has 48 divisors (see below), whose sum is σ = 1039364480. Its totient is φ = 145675584.

The previous prime is 441221617. The next prime is 441221657. The reversal of 441221628 is 826122144.

It is a junction number, because it is equal to n+sod(n) for n = 441221595 and 441221604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843375 + ... + 843897.

Almost surely, 2^441221628 is an apocalyptic number.

It is an amenable number.

441221628 is an abundant number, since it is smaller than the sum of its proper divisors (598142852).

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

441221628 is a wasteful number, since it uses less digits than its factorization.

441221628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1064 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 441221628 is about 21005.2761943279. The cubic root of 441221628 is about 761.2937497673.

The spelling of 441221628 in words is "four hundred forty-one million, two hundred twenty-one thousand, six hundred twenty-eight".