428891416 has 16 divisors (see below), whose sum is σ = 804596400. Its totient is φ = 214332384.

The previous prime is 428891413. The next prime is 428891431. The reversal of 428891416 is 614198824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428891413) 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, 3166 + ... + 29458.

It is an arithmetic number, because the mean of its divisors is an integer number (50287275).

Almost surely, 2^428891416 is an apocalyptic number.

It is an amenable number.

428891416 is a deficient number, since it is larger than the sum of its proper divisors (375704984).

428891416 is a wasteful number, since it uses less digits than its factorization.

428891416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28338 (or 28334 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 428891416 is about 20709.6937688610. The cubic root of 428891416 is about 754.1350362174.

The spelling of 428891416 in words is "four hundred twenty-eight million, eight hundred ninety-one thousand, four hundred sixteen".