28030381977 has 8 divisors (see below), whose sum is σ = 40248753664. Its totient is φ = 17249465808.

The previous prime is 28030381933. The next prime is 28030382047. The reversal of 28030381977 is 77918303082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28030381977 - 2⁶ = 28030381913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28030381177) 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, 359363833 + ... + 359363910.

It is an arithmetic number, because the mean of its divisors is an integer number (5031094208).

Almost surely, 2^28030381977 is an apocalyptic number.

It is an amenable number.

28030381977 is a deficient number, since it is larger than the sum of its proper divisors (12218371687).

28030381977 is a wasteful number, since it uses less digits than its factorization.

28030381977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718727759.

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 28030381977 in words is "twenty-eight billion, thirty million, three hundred eighty-one thousand, nine hundred seventy-seven".