28159066 has 32 divisors (see below), whose sum is σ = 47234880. Its totient is φ = 12507264.

The previous prime is 28159057. The next prime is 28159073. The reversal of 28159066 is 66095182.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99361 + ... + 99643.

It is an arithmetic number, because the mean of its divisors is an integer number (1476090).

Almost surely, 2^28159066 is an apocalyptic number.

28159066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28159066 is a deficient number, since it is larger than the sum of its proper divisors (19075814).

28159066 is a wasteful number, since it uses less digits than its factorization.

28159066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 28159066 is about 5306.5116602152. The cubic root of 28159066 is about 304.2328332275.

It can be divided in two parts, 2815 and 9066, that added together give a square (11881 = 109²).

The spelling of 28159066 in words is "twenty-eight million, one hundred fifty-nine thousand, sixty-six".