428612678 has 32 divisors (see below), whose sum is σ = 731808000. Its totient is φ = 186640416.

The previous prime is 428612677. The next prime is 428612719. The reversal of 428612678 is 876216824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428612671) 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, 128273 + ... + 131571.

It is an arithmetic number, because the mean of its divisors is an integer number (22869000).

Almost surely, 2^428612678 is an apocalyptic number.

428612678 is a deficient number, since it is larger than the sum of its proper divisors (303195322).

428612678 is a wasteful number, since it uses less digits than its factorization.

428612678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596.

The product of its digits is 258048, while the sum is 44.

The square root of 428612678 is about 20702.9630246494. The cubic root of 428612678 is about 753.9716291651.

The spelling of 428612678 in words is "four hundred twenty-eight million, six hundred twelve thousand, six hundred seventy-eight".