28146890918 has 16 divisors (see below), whose sum is σ = 44195004000. Its totient is φ = 13419084096.

The previous prime is 28146890917. The next prime is 28146890921. The reversal of 28146890918 is 81909864182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28146890917) 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, 950543 + ... + 979706.

It is an arithmetic number, because the mean of its divisors is an integer number (2762187750).

Almost surely, 2^28146890918 is an apocalyptic number.

28146890918 is a deficient number, since it is larger than the sum of its proper divisors (16048113082).

28146890918 is a wasteful number, since it uses less digits than its factorization.

28146890918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930591.

The product of its (nonzero) digits is 1990656, while the sum is 56.

The spelling of 28146890918 in words is "twenty-eight billion, one hundred forty-six million, eight hundred ninety thousand, nine hundred eighteen".