28446434 has 16 divisors (see below), whose sum is σ = 43571520. Its totient is φ = 13925520.

The previous prime is 28446433. The next prime is 28446443. The reversal of 28446434 is 43464482.

It is a junction number, because it is equal to n+sod(n) for n = 28446394 and 28446403.

It is not an unprimeable number, because it can be changed into a prime (28446433) 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, 22532 + ... + 23760.

It is an arithmetic number, because the mean of its divisors is an integer number (2723220).

Almost surely, 2^28446434 is an apocalyptic number.

28446434 is a deficient number, since it is larger than the sum of its proper divisors (15125086).

28446434 is a wasteful number, since it uses less digits than its factorization.

28446434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465.

The product of its digits is 73728, while the sum is 35.

The square root of 28446434 is about 5333.5198509052. The cubic root of 28446434 is about 305.2642482834.

The spelling of 28446434 in words is "twenty-eight million, four hundred forty-six thousand, four hundred thirty-four".