428235855 has 16 divisors (see below), whose sum is σ = 686001120. Its totient is φ = 228117888.

The previous prime is 428235811. The next prime is 428235877. The reversal of 428235855 is 558532824.

It is a happy number.

It is not a de Polignac number, because 428235855 - 2⁶ = 428235791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3940 + ... + 29529.

It is an arithmetic number, because the mean of its divisors is an integer number (42875070).

Almost surely, 2^428235855 is an apocalyptic number.

428235855 is a deficient number, since it is larger than the sum of its proper divisors (257765265).

428235855 is a wasteful number, since it uses less digits than its factorization.

428235855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34330.

The product of its digits is 384000, while the sum is 42.

The square root of 428235855 is about 20693.8603213610. The cubic root of 428235855 is about 753.7506082078.

The spelling of 428235855 in words is "four hundred twenty-eight million, two hundred thirty-five thousand, eight hundred fifty-five".