28528070723 has 16 divisors (see below), whose sum is σ = 30924052992. Its totient is φ = 26247144000.

The previous prime is 28528070717. The next prime is 28528070729. The reversal of 28528070723 is 32707082582.

It is an interprime number because it is at equal distance from previous prime (28528070717) and next prime (28528070729).

It is a cyclic number.

It is not a de Polignac number, because 28528070723 - 2³⁰ = 27454328899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28528070729) 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, 146093 + ... + 279998.

It is an arithmetic number, because the mean of its divisors is an integer number (1932753312).

Almost surely, 2^28528070723 is an apocalyptic number.

28528070723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28528070723 is a deficient number, since it is larger than the sum of its proper divisors (2395982269).

28528070723 is a wasteful number, since it uses less digits than its factorization.

28528070723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426226.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 28528070723 in words is "twenty-eight billion, five hundred twenty-eight million, seventy thousand, seven hundred twenty-three".