28287654477 has 16 divisors (see below), whose sum is σ = 37777296000. Its totient is φ = 18828252864.

The previous prime is 28287654463. The next prime is 28287654481. The reversal of 28287654477 is 77445678282.

It is a happy number.

It is not a de Polignac number, because 28287654477 - 2⁶ = 28287654413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28287654477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28287654457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7946424 + ... + 7949982.

It is an arithmetic number, because the mean of its divisors is an integer number (2361081000).

Almost surely, 2^28287654477 is an apocalyptic number.

It is an amenable number.

28287654477 is a deficient number, since it is larger than the sum of its proper divisors (9489641523).

28287654477 is a wasteful number, since it uses less digits than its factorization.

28287654477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060.

The product of its digits is 42147840, while the sum is 60.

The spelling of 28287654477 in words is "twenty-eight billion, two hundred eighty-seven million, six hundred fifty-four thousand, four hundred seventy-seven".