428441644 has 6 divisors (see below), whose sum is σ = 749772884. Its totient is φ = 214220820.

The previous prime is 428441641. The next prime is 428441653. The reversal of 428441644 is 446144824.

It is not an unprimeable number, because it can be changed into a prime (428441641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53555202 + ... + 53555209.

Almost surely, 2^428441644 is an apocalyptic number.

It is an amenable number.

428441644 is a deficient number, since it is larger than the sum of its proper divisors (321331240).

428441644 is a wasteful number, since it uses less digits than its factorization.

428441644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107110415 (or 107110413 counting only the distinct ones).

The product of its digits is 98304, while the sum is 37.

The square root of 428441644 is about 20698.8319477211. The cubic root of 428441644 is about 753.8713273100.

The spelling of 428441644 in words is "four hundred twenty-eight million, four hundred forty-one thousand, six hundred forty-four".