428826783 has 36 divisors (see below), whose sum is σ = 731111640. Its totient is φ = 222757920.

The previous prime is 428826779. The next prime is 428826823. The reversal of 428826783 is 387628824.

It is a happy number.

It is not a de Polignac number, because 428826783 - 2² = 428826779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428826583) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5733 + ... + 29841.

Almost surely, 2^428826783 is an apocalyptic number.

428826783 is a deficient number, since it is larger than the sum of its proper divisors (302284857).

428826783 is a wasteful number, since it uses less digits than its factorization.

428826783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24148 (or 24130 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 428826783 is about 20708.1332572494. The cubic root of 428826783 is about 754.0971521465.

The spelling of 428826783 in words is "four hundred twenty-eight million, eight hundred twenty-six thousand, seven hundred eighty-three".