28552446957 has 4 divisors (see below), whose sum is σ = 38069929280. Its totient is φ = 19034964636.

The previous prime is 28552446953. The next prime is 28552446977. The reversal of 28552446957 is 75964425582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28552446957 - 2² = 28552446953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28552446897 and 28552446906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28552446953) 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, 4758741157 + ... + 4758741162.

It is an arithmetic number, because the mean of its divisors is an integer number (9517482320).

Almost surely, 2^28552446957 is an apocalyptic number.

It is an amenable number.

28552446957 is a deficient number, since it is larger than the sum of its proper divisors (9517482323).

28552446957 is an equidigital number, since it uses as much as digits as its factorization.

28552446957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9517482322.

The product of its digits is 24192000, while the sum is 57.

The spelling of 28552446957 in words is "twenty-eight billion, five hundred fifty-two million, four hundred forty-six thousand, nine hundred fifty-seven".