28204723695 has 8 divisors (see below), whose sum is σ = 45127557936. Its totient is φ = 15042519296.

The previous prime is 28204723693. The next prime is 28204723699. The reversal of 28204723695 is 59632740282.

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 28204723695 - 2¹ = 28204723693 is a prime.

It is a super-2 number, since 2×28204723695² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28204723693) 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, 940157442 + ... + 940157471.

It is an arithmetic number, because the mean of its divisors is an integer number (5640944742).

Almost surely, 2^28204723695 is an apocalyptic number.

28204723695 is a deficient number, since it is larger than the sum of its proper divisors (16922834241).

28204723695 is a wasteful number, since it uses less digits than its factorization.

28204723695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880314921.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 28204723695 in words is "twenty-eight billion, two hundred four million, seven hundred twenty-three thousand, six hundred ninety-five".