28586831604 has 12 divisors (see below), whose sum is σ = 66702607104. Its totient is φ = 9528943864.

The previous prime is 28586831597. The next prime is 28586831617. The reversal of 28586831604 is 40613868582.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191117972 + ... + 1191117995.

It is an arithmetic number, because the mean of its divisors is an integer number (5558550592).

Almost surely, 2^28586831604 is an apocalyptic number.

It is an amenable number.

28586831604 is an abundant number, since it is smaller than the sum of its proper divisors (38115775500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28586831604 is a wasteful number, since it uses less digits than its factorization.

28586831604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382235974 (or 2382235972 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 28586831604 in words is "twenty-eight billion, five hundred eighty-six million, eight hundred thirty-one thousand, six hundred four".