428517830 has 96 divisors (see below), whose sum is σ = 917106624. Its totient is φ = 143016192.

The previous prime is 428517787. The next prime is 428517839. The reversal of 428517830 is 38715824.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428517839) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1079192 + ... + 1079588.

It is an arithmetic number, because the mean of its divisors is an integer number (9553194).

Almost surely, 2^428517830 is an apocalyptic number.

428517830 is an abundant number, since it is smaller than the sum of its proper divisors (488588794).

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

428517830 is a wasteful number, since it uses less digits than its factorization.

428517830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 428517830 is about 20700.6722113075. The cubic root of 428517830 is about 753.9160094254.

The spelling of 428517830 in words is "four hundred twenty-eight million, five hundred seventeen thousand, eight hundred thirty".