428365830 has 64 divisors (see below), whose sum is σ = 1145871360. Its totient is φ = 101850624.

The previous prime is 428365789. The next prime is 428365831. The reversal of 428365830 is 38563824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428365831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12414 + ... + 31793.

It is an arithmetic number, because the mean of its divisors is an integer number (17904240).

Almost surely, 2^428365830 is an apocalyptic number.

428365830 is an abundant number, since it is smaller than the sum of its proper divisors (717505530).

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

428365830 is a wasteful number, since it uses less digits than its factorization.

428365830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44253.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 428365830 is about 20697.0005073199. Note that the first 3 decimals coincide. The cubic root of 428365830 is about 753.8268581094.

The spelling of 428365830 in words is "four hundred twenty-eight million, three hundred sixty-five thousand, eight hundred thirty".