28931280970 has 16 divisors (see below), whose sum is σ = 52146787680. Its totient is φ = 11556849744.

The previous prime is 28931280967. The next prime is 28931280971. The reversal of 28931280970 is 7908213982.

It is not an unprimeable number, because it can be changed into a prime (28931280971) 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, 1950072 + ... + 1964851.

It is an arithmetic number, because the mean of its divisors is an integer number (3259174230).

Almost surely, 2^28931280970 is an apocalyptic number.

28931280970 is a deficient number, since it is larger than the sum of its proper divisors (23215506710).

28931280970 is a wasteful number, since it uses less digits than its factorization.

28931280970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915669.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 28931280970 in words is "twenty-eight billion, nine hundred thirty-one million, two hundred eighty thousand, nine hundred seventy".