428857893 has 12 divisors (see below), whose sum is σ = 620224800. Its totient is φ = 285552936.

The previous prime is 428857883. The next prime is 428857901. The reversal of 428857893 is 398758824.

It is a happy number.

It is not a de Polignac number, because 428857893 - 2⁹ = 428857381 is a prime.

It is a super-3 number, since 3×428857893³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428857883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21543 + ... + 36356.

It is an arithmetic number, because the mean of its divisors is an integer number (51685400).

Almost surely, 2^428857893 is an apocalyptic number.

It is an amenable number.

428857893 is a deficient number, since it is larger than the sum of its proper divisors (191366907).

428857893 is a wasteful number, since it uses less digits than its factorization.

428857893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58728 (or 58725 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 428857893 is about 20708.8843977651. The cubic root of 428857893 is about 754.1153874776.

The spelling of 428857893 in words is "four hundred twenty-eight million, eight hundred fifty-seven thousand, eight hundred ninety-three".