428576563874 has 4 divisors (see below), whose sum is σ = 642864845814. Its totient is φ = 214288281936.

The previous prime is 428576563823. The next prime is 428576563879. The reversal of 428576563874 is 478365675824.

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

It can be written as a sum of positive squares in only one way, i.e., 427314538249 + 1262025625 = 653693^2 + 35525^2 .

It is a super-2 number, since 2×428576563874² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 428576563874.

It is not an unprimeable number, because it can be changed into a prime (428576563879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107144140967 + ... + 107144140970.

Almost surely, 2^428576563874 is an apocalyptic number.

428576563874 is a deficient number, since it is larger than the sum of its proper divisors (214288281940).

428576563874 is a wasteful number, since it uses less digits than its factorization.

428576563874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214288281939.

The product of its digits is 270950400, while the sum is 65.

The spelling of 428576563874 in words is "four hundred twenty-eight billion, five hundred seventy-six million, five hundred sixty-three thousand, eight hundred seventy-four".