28977940955 has 8 divisors (see below), whose sum is σ = 34905749472. Its totient is φ = 23094205888.

The previous prime is 28977940951. The next prime is 28977940961. The reversal of 28977940955 is 55904977982.

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

It is a cyclic number.

It is not a de Polignac number, because 28977940955 - 2² = 28977940951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28977940891 and 28977940900.

It is not an unprimeable number, because it can be changed into a prime (28977940951) 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, 11016914 + ... + 11019543.

It is an arithmetic number, because the mean of its divisors is an integer number (4363218684).

Almost surely, 2^28977940955 is an apocalyptic number.

28977940955 is a deficient number, since it is larger than the sum of its proper divisors (5927808517).

28977940955 is a wasteful number, since it uses less digits than its factorization.

28977940955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22036725.

The product of its (nonzero) digits is 57153600, while the sum is 65.

The spelling of 28977940955 in words is "twenty-eight billion, nine hundred seventy-seven million, nine hundred forty thousand, nine hundred fifty-five".