28103966 has 16 divisors (see below), whose sum is σ = 46545408. Its totient is φ = 12619800.

The previous prime is 28103947. The next prime is 28104007. The reversal of 28103966 is 66930182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5870 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (2909088).

Almost surely, 2^28103966 is an apocalyptic number.

28103966 is a deficient number, since it is larger than the sum of its proper divisors (18441442).

28103966 is a wasteful number, since it uses less digits than its factorization.

28103966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15487.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 28103966 is about 5301.3173834435. The cubic root of 28103966 is about 304.0342687015.

It can be divided in two parts, 2810 and 3966, that added together give a palindrome (6776).

The spelling of 28103966 in words is "twenty-eight million, one hundred three thousand, nine hundred sixty-six".