428141863 has 4 divisors (see below), whose sum is σ = 432069880. Its totient is φ = 424213848.

The previous prime is 428141797. The next prime is 428141869. The reversal of 428141863 is 368141824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428141863 - 2²¹ = 426044711 is a prime.

It is a super-2 number, since 2×428141863² = 366610909706221538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428141869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963845 + ... + 1964062.

It is an arithmetic number, because the mean of its divisors is an integer number (108017470).

Almost surely, 2^428141863 is an apocalyptic number.

428141863 is a deficient number, since it is larger than the sum of its proper divisors (3928017).

428141863 is a wasteful number, since it uses less digits than its factorization.

428141863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928016.

The product of its digits is 36864, while the sum is 37.

The square root of 428141863 is about 20691.5891849805. The cubic root of 428141863 is about 753.6954581386.

The spelling of 428141863 in words is "four hundred twenty-eight million, one hundred forty-one thousand, eight hundred sixty-three".