28571508814 has 4 divisors (see below), whose sum is σ = 42857263224. Its totient is φ = 14285754406.

The previous prime is 28571508811. The next prime is 28571508827. The reversal of 28571508814 is 41880517582.

It is a happy number.

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

It is a super-2 number, since 2×28571508814² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28571508811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7142877202 + ... + 7142877205.

It is an arithmetic number, because the mean of its divisors is an integer number (10714315806).

Almost surely, 2^28571508814 is an apocalyptic number.

28571508814 is a deficient number, since it is larger than the sum of its proper divisors (14285754410).

28571508814 is a wasteful number, since it uses less digits than its factorization.

28571508814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14285754409.

The product of its (nonzero) digits is 716800, while the sum is 49.

The spelling of 28571508814 in words is "twenty-eight billion, five hundred seventy-one million, five hundred eight thousand, eight hundred fourteen".