28714171906 has 16 divisors (see below), whose sum is σ = 49310818560. Its totient is φ = 12284442720.

The previous prime is 28714171903. The next prime is 28714171961. The reversal of 28714171906 is 60917141782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28714171903) 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, 1794330 + ... + 1810261.

It is an arithmetic number, because the mean of its divisors is an integer number (3081926160).

Almost surely, 2^28714171906 is an apocalyptic number.

28714171906 is a deficient number, since it is larger than the sum of its proper divisors (20596646654).

28714171906 is a wasteful number, since it uses less digits than its factorization.

28714171906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605169.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 28714171906 in words is "twenty-eight billion, seven hundred fourteen million, one hundred seventy-one thousand, nine hundred six".