428885736 has 16 divisors (see below), whose sum is σ = 1072214400. Its totient is φ = 142961904.

The previous prime is 428885729. The next prime is 428885773. The reversal of 428885736 is 637588824.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8935096 + ... + 8935143.

It is an arithmetic number, because the mean of its divisors is an integer number (67013400).

Almost surely, 2^428885736 is an apocalyptic number.

It is an amenable number.

428885736 is an abundant number, since it is smaller than the sum of its proper divisors (643328664).

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

428885736 is a wasteful number, since it uses less digits than its factorization.

428885736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17870248 (or 17870244 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The square root of 428885736 is about 20709.5566345588. The cubic root of 428885736 is about 754.1317070873.

The spelling of 428885736 in words is "four hundred twenty-eight million, eight hundred eighty-five thousand, seven hundred thirty-six".