428630540 has 24 divisors (see below), whose sum is σ = 969365040. Its totient is φ = 158263488.

The previous prime is 428630491. The next prime is 428630561. The reversal of 428630540 is 45036824.

It is a junction number, because it is equal to n+sod(n) for n = 428630497 and 428630506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 824030 + ... + 824549.

It is an arithmetic number, because the mean of its divisors is an integer number (40390210).

Almost surely, 2^428630540 is an apocalyptic number.

It is an amenable number.

428630540 is an abundant number, since it is smaller than the sum of its proper divisors (540734500).

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

428630540 is a wasteful number, since it uses less digits than its factorization.

428630540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648601 (or 1648599 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 428630540 is about 20703.3944076811. The cubic root of 428630540 is about 753.9821026881.

The spelling of 428630540 in words is "four hundred twenty-eight million, six hundred thirty thousand, five hundred forty".