428222438 has 16 divisors (see below), whose sum is σ = 734383104. Its totient is φ = 183452040.

The previous prime is 428222429. The next prime is 428222447. The reversal of 428222438 is 834222824.

It is an interprime number because it is at equal distance from previous prime (428222429) and next prime (428222447).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 428222398 and 428222407.

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, 47531 + ... + 55817.

It is an arithmetic number, because the mean of its divisors is an integer number (45898944).

Almost surely, 2^428222438 is an apocalyptic number.

428222438 is a deficient number, since it is larger than the sum of its proper divisors (306160666).

428222438 is a wasteful number, since it uses less digits than its factorization.

428222438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11987.

The product of its digits is 49152, while the sum is 35.

The square root of 428222438 is about 20693.5361405440. The cubic root of 428222438 is about 753.7427362392.

The spelling of 428222438 in words is "four hundred twenty-eight million, two hundred twenty-two thousand, four hundred thirty-eight".