28571034077 has 8 divisors (see below), whose sum is σ = 28784121912. Its totient is φ = 28358553600.

The previous prime is 28571034073. The next prime is 28571034097. The reversal of 28571034077 is 77043017582.

It can be written as a sum of positive squares in 4 ways, for example, as 3476989156 + 25094044921 = 58966^2 + 158411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28571034077 - 2² = 28571034073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28571034073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57188 + ... + 245789.

It is an arithmetic number, because the mean of its divisors is an integer number (3598015239).

Almost surely, 2^28571034077 is an apocalyptic number.

It is an amenable number.

28571034077 is a deficient number, since it is larger than the sum of its proper divisors (213087835).

28571034077 is a wasteful number, since it uses less digits than its factorization.

28571034077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303679.

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 28571034077 in words is "twenty-eight billion, five hundred seventy-one million, thirty-four thousand, seventy-seven".