428571420 has 48 divisors (see below), whose sum is σ = 1252177920. Its totient is φ = 109316416.

The previous prime is 428571389. The next prime is 428571431. The reversal of 428571420 is 24175824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153900 + ... + 156659.

It is an arithmetic number, because the mean of its divisors is an integer number (26087040).

Almost surely, 2^428571420 is an apocalyptic number.

It is an amenable number.

428571420 is an abundant number, since it is smaller than the sum of its proper divisors (823606500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428571420 is a wasteful number, since it uses less digits than its factorization.

428571420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310594 (or 310592 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 428571420 is about 20701.9665732510. The cubic root of 428571420 is about 753.9474361028.

The spelling of 428571420 in words is "four hundred twenty-eight million, five hundred seventy-one thousand, four hundred twenty".