28047034 has 8 divisors (see below), whose sum is σ = 43096788. Its totient is φ = 13681440.

The previous prime is 28047029. The next prime is 28047037. The reversal of 28047034 is 43074082.

It can be written as a sum of positive squares in 2 ways, for example, as 24059025 + 3988009 = 4905^2 + 1997^2 .

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

It is a super-2 number, since 2×28047034² = 1573272232394312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28046993 and 28047011.

It is not an unprimeable number, because it can be changed into a prime (28047037) 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 3 ways as a sum of consecutive naturals, for example, 170937 + ... + 171100.

Almost surely, 2^28047034 is an apocalyptic number.

28047034 is a deficient number, since it is larger than the sum of its proper divisors (15049754).

28047034 is a wasteful number, since it uses less digits than its factorization.

28047034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342080.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28047034 is about 5295.9450525850. The cubic root of 28047034 is about 303.8288293657.

The spelling of 28047034 in words is "twenty-eight million, forty-seven thousand, thirty-four".