428914644 has 24 divisors (see below), whose sum is σ = 1002569568. Its totient is φ = 142718880.

The previous prime is 428914627. The next prime is 428914657. The reversal of 428914644 is 446419824.

It is a junction number, because it is equal to n+sod(n) for n = 428914596 and 428914605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24447 + ... + 38150.

It is an arithmetic number, because the mean of its divisors is an integer number (41773732).

Almost surely, 2^428914644 is an apocalyptic number.

It is an amenable number.

428914644 is an abundant number, since it is smaller than the sum of its proper divisors (573654924).

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

428914644 is a wasteful number, since it uses less digits than its factorization.

428914644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63175 (or 63173 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 428914644 is about 20710.2545614485. The cubic root of 428914644 is about 754.1486501779.

The spelling of 428914644 in words is "four hundred twenty-eight million, nine hundred fourteen thousand, six hundred forty-four".