28667608442 has 32 divisors (see below), whose sum is σ = 48342801024. Its totient is φ = 12636716800.

The previous prime is 28667608441. The next prime is 28667608447. The reversal of 28667608442 is 24480676682.

It is not an unprimeable number, because it can be changed into a prime (28667608441) 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, 55478 + ... + 245790.

It is an arithmetic number, because the mean of its divisors is an integer number (1510712532).

Almost surely, 2^28667608442 is an apocalyptic number.

28667608442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28667608442 is a deficient number, since it is larger than the sum of its proper divisors (19675192582).

28667608442 is a wasteful number, since it uses less digits than its factorization.

28667608442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190534.

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 28667608442 in words is "twenty-eight billion, six hundred sixty-seven million, six hundred eight thousand, four hundred forty-two".