28528417723 has 16 divisors (see below), whose sum is σ = 32673503520. Its totient is φ = 24675641856.

The previous prime is 28528417699. The next prime is 28528417733. The reversal of 28528417723 is 32771482582.

It is a cyclic number.

It is not a de Polignac number, because 28528417723 - 2¹³ = 28528409531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28528417733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234168 + ... + 334501.

It is an arithmetic number, because the mean of its divisors is an integer number (2042093970).

Almost surely, 2^28528417723 is an apocalyptic number.

28528417723 is a deficient number, since it is larger than the sum of its proper divisors (4145085797).

28528417723 is a wasteful number, since it uses less digits than its factorization.

28528417723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568926.

The product of its digits is 1505280, while the sum is 49.

The spelling of 28528417723 in words is "twenty-eight billion, five hundred twenty-eight million, four hundred seventeen thousand, seven hundred twenty-three".