428457740 has 24 divisors (see below), whose sum is σ = 900463200. Its totient is φ = 171249408.

The previous prime is 428457739. The next prime is 428457751. The reversal of 428457740 is 47754824.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20324 + ... + 35636.

It is an arithmetic number, because the mean of its divisors is an integer number (37519300).

Almost surely, 2^428457740 is an apocalyptic number.

It is an amenable number.

428457740 is an abundant number, since it is smaller than the sum of its proper divisors (472005460).

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

428457740 is a wasteful number, since it uses less digits than its factorization.

428457740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16721 (or 16719 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 41.

The square root of 428457740 is about 20699.2207582798. The cubic root of 428457740 is about 753.8807678496.

The spelling of 428457740 in words is "four hundred twenty-eight million, four hundred fifty-seven thousand, seven hundred forty".