28771177476 has 24 divisors (see below), whose sum is σ = 68770132704. Its totient is φ = 9356480320.

The previous prime is 28771177471. The next prime is 28771177489. The reversal of 28771177476 is 67477117782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28771177471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29238510 + ... + 29239493.

It is an arithmetic number, because the mean of its divisors is an integer number (2865422196).

Almost surely, 2^28771177476 is an apocalyptic number.

It is an amenable number.

28771177476 is an abundant number, since it is smaller than the sum of its proper divisors (39998955228).

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

28771177476 is a wasteful number, since it uses less digits than its factorization.

28771177476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58478051 (or 58478049 counting only the distinct ones).

The product of its digits is 6453888, while the sum is 57.

The spelling of 28771177476 in words is "twenty-eight billion, seven hundred seventy-one million, one hundred seventy-seven thousand, four hundred seventy-six".