28528361607 has 4 divisors (see below), whose sum is σ = 38037815480. Its totient is φ = 19018907736.

The previous prime is 28528361591. The next prime is 28528361639. The reversal of 28528361607 is 70616382582.

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

It is not a de Polignac number, because 28528361607 - 2⁴ = 28528361591 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 (28528361677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4754726932 + ... + 4754726937.

It is an arithmetic number, because the mean of its divisors is an integer number (9509453870).

Almost surely, 2^28528361607 is an apocalyptic number.

28528361607 is a deficient number, since it is larger than the sum of its proper divisors (9509453873).

28528361607 is an equidigital number, since it uses as much as digits as its factorization.

28528361607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9509453872.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 28528361607 in words is "twenty-eight billion, five hundred twenty-eight million, three hundred sixty-one thousand, six hundred seven".