28147677772 has 12 divisors (see below), whose sum is σ = 49469847336. Its totient is φ = 14013435680.

The previous prime is 28147677749. The next prime is 28147677773. The reversal of 28147677772 is 27777674182.

It is not an unprimeable number, because it can be changed into a prime (28147677773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15099754 + ... + 15101617.

It is an arithmetic number, because the mean of its divisors is an integer number (4122487278).

Almost surely, 2^28147677772 is an apocalyptic number.

It is an amenable number.

28147677772 is a deficient number, since it is larger than the sum of its proper divisors (21322169564).

28147677772 is a wasteful number, since it uses less digits than its factorization.

28147677772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30201608 (or 30201606 counting only the distinct ones).

The product of its digits is 12907776, while the sum is 58.

The spelling of 28147677772 in words is "twenty-eight billion, one hundred forty-seven million, six hundred seventy-seven thousand, seven hundred seventy-two".