28880966906 has 8 divisors (see below), whose sum is σ = 47259764064. Its totient is φ = 13127712220.

The previous prime is 28880966903. The next prime is 28880966923. The reversal of 28880966906 is 60966908882.

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

It is a super-2 number, since 2×28880966906² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28880966903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656385590 + ... + 656385633.

It is an arithmetic number, because the mean of its divisors is an integer number (5907470508).

Almost surely, 2^28880966906 is an apocalyptic number.

28880966906 is a deficient number, since it is larger than the sum of its proper divisors (18378797158).

28880966906 is a wasteful number, since it uses less digits than its factorization.

28880966906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312771236.

The product of its (nonzero) digits is 17915904, while the sum is 62.

The spelling of 28880966906 in words is "twenty-eight billion, eight hundred eighty million, nine hundred sixty-six thousand, nine hundred six".