428870143 has 16 divisors (see below), whose sum is σ = 469568736. Its totient is φ = 389329920.

The previous prime is 428870137. The next prime is 428870153. The reversal of 428870143 is 341078824.

It is a cyclic number.

It is not a de Polignac number, because 428870143 - 2⁵ = 428870111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428870153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200188 + ... + 202318.

It is an arithmetic number, because the mean of its divisors is an integer number (29348046).

Almost surely, 2^428870143 is an apocalyptic number.

428870143 is a deficient number, since it is larger than the sum of its proper divisors (40698593).

428870143 is a wasteful number, since it uses less digits than its factorization.

428870143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 428870143 is about 20709.1801624304. The cubic root of 428870143 is about 754.1225676536.

The spelling of 428870143 in words is "four hundred twenty-eight million, eight hundred seventy thousand, one hundred forty-three".