428030838 has 16 divisors (see below), whose sum is σ = 951179760. Its totient is φ = 142676928.

The previous prime is 428030831. The next prime is 428030843. The reversal of 428030838 is 838030824.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428030831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3963195 + ... + 3963302.

It is an arithmetic number, because the mean of its divisors is an integer number (59448735).

Almost surely, 2^428030838 is an apocalyptic number.

428030838 is an abundant number, since it is smaller than the sum of its proper divisors (523148922).

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

428030838 is a wasteful number, since it uses less digits than its factorization.

428030838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926508 (or 7926502 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 428030838 is about 20688.9061576488. The cubic root of 428030838 is about 753.6303035098.

The spelling of 428030838 in words is "four hundred twenty-eight million, thirty thousand, eight hundred thirty-eight".