428702840 has 16 divisors (see below), whose sum is σ = 964581480. Its totient is φ = 171481120.

The previous prime is 428702797. The next prime is 428702863. The reversal of 428702840 is 48207824.

It is a super-2 number, since 2×428702840² = 367572250048131200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 428702840.

It is a congruent 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, 5358746 + ... + 5358825.

Almost surely, 2^428702840 is an apocalyptic number.

428702840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428702840 is an abundant number, since it is smaller than the sum of its proper divisors (535878640).

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

428702840 is a wasteful number, since it uses less digits than its factorization.

428702840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10717582 (or 10717578 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 428702840 is about 20705.1404245419. The cubic root of 428702840 is about 754.0244933845.

The spelling of 428702840 in words is "four hundred twenty-eight million, seven hundred two thousand, eight hundred forty".