28029946 has 16 divisors (see below), whose sum is σ = 48297600. Its totient is φ = 11951280.

The previous prime is 28029943. The next prime is 28029961. The reversal of 28029946 is 64992082.

It is a junction number, because it is equal to n+sod(n) for n = 28029899 and 28029908.

It is not an unprimeable number, because it can be changed into a prime (28029941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245 + ... + 7816.

It is an arithmetic number, because the mean of its divisors is an integer number (3018600).

Almost surely, 2^28029946 is an apocalyptic number.

28029946 is a deficient number, since it is larger than the sum of its proper divisors (20267654).

28029946 is a wasteful number, since it uses less digits than its factorization.

28029946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10269.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28029946 is about 5294.3314969881. The cubic root of 28029946 is about 303.7671130146.

The spelling of 28029946 in words is "twenty-eight million, twenty-nine thousand, nine hundred forty-six".