706428438 has 32 divisors (see below), whose sum is σ = 1514007936. Its totient is φ = 218951808.

The previous prime is 706428433. The next prime is 706428449. The reversal of 706428438 is 834824607.

706428438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×706428438² = 998082276030239688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 706428438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706428433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33256 + ... + 50187.

It is an arithmetic number, because the mean of its divisors is an integer number (47312748).

Almost surely, 2^706428438 is an apocalyptic number.

706428438 is an abundant number, since it is smaller than the sum of its proper divisors (807579498).

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

706428438 is a wasteful number, since it uses less digits than its factorization.

706428438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83548.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 706428438 is about 26578.7215268154. The cubic root of 706428438 is about 890.6137407059.

The spelling of 706428438 in words is "seven hundred six million, four hundred twenty-eight thousand, four hundred thirty-eight".