28475434 has 8 divisors (see below), whose sum is σ = 45998820. Its totient is φ = 13142496.

The previous prime is 28475431. The next prime is 28475479. The reversal of 28475434 is 43457482.

It can be written as a sum of positive squares in 2 ways, for example, as 27071209 + 1404225 = 5203^2 + 1185^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28475393 and 28475402.

It is not an unprimeable number, because it can be changed into a prime (28475431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547579 + ... + 547630.

Almost surely, 2^28475434 is an apocalyptic number.

28475434 is a deficient number, since it is larger than the sum of its proper divisors (17523386).

28475434 is a wasteful number, since it uses less digits than its factorization.

28475434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095224.

The product of its digits is 107520, while the sum is 37.

The square root of 28475434 is about 5336.2378132913. The cubic root of 28475434 is about 305.3679479433.

It can be divided in two parts, 2847 and 5434, that added together give a square (8281 = 91²).

The spelling of 28475434 in words is "twenty-eight million, four hundred seventy-five thousand, four hundred thirty-four".