28753575477 has 16 divisors (see below), whose sum is σ = 41927699520. Its totient is φ = 17382944000.

The previous prime is 28753575467. The next prime is 28753575491. The reversal of 28753575477 is 77457535782.

It is a cyclic number.

It is not a de Polignac number, because 28753575477 - 2¹² = 28753571381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28753575477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28753575427) 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, 1073202 + ... + 1099667.

It is an arithmetic number, because the mean of its divisors is an integer number (2620481220).

Almost surely, 2^28753575477 is an apocalyptic number.

It is an amenable number.

28753575477 is a deficient number, since it is larger than the sum of its proper divisors (13174124043).

28753575477 is a wasteful number, since it uses less digits than its factorization.

28753575477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173284.

The product of its digits is 57624000, while the sum is 60.

The spelling of 28753575477 in words is "twenty-eight billion, seven hundred fifty-three million, five hundred seventy-five thousand, four hundred seventy-seven".