28413434 has 40 divisors (see below), whose sum is σ = 51056628. Its totient is φ = 11854080.

The previous prime is 28413433. The next prime is 28413439. The reversal of 28413434 is 43431482.

It can be written as a sum of positive squares in 2 ways, for example, as 25472209 + 2941225 = 5047^2 + 1715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28413397 and 28413406.

It is not an unprimeable number, because it can be changed into a prime (28413431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 292874 + ... + 292970.

Almost surely, 2^28413434 is an apocalyptic number.

28413434 is a deficient number, since it is larger than the sum of its proper divisors (22643194).

28413434 is an frugal number, since it uses more digits than its factorization.

28413434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 167 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 28413434 is about 5330.4253113612. The cubic root of 28413434 is about 305.1461594557.

The spelling of 28413434 in words is "twenty-eight million, four hundred thirteen thousand, four hundred thirty-four".