28402166 has 8 divisors (see below), whose sum is σ = 45880464. Its totient is φ = 13108680.

The previous prime is 28402151. The next prime is 28402177. The reversal of 28402166 is 66120482.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546170 + ... + 546221.

It is an arithmetic number, because the mean of its divisors is an integer number (5735058).

Almost surely, 2^28402166 is an apocalyptic number.

28402166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28402166 is a deficient number, since it is larger than the sum of its proper divisors (17478298).

28402166 is a wasteful number, since it uses less digits than its factorization.

28402166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092406.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28402166 is about 5329.3682552438. The cubic root of 28402166 is about 305.1058165491.

The spelling of 28402166 in words is "twenty-eight million, four hundred two thousand, one hundred sixty-six".