28429834 has 4 divisors (see below), whose sum is σ = 42644754. Its totient is φ = 14214916.

The previous prime is 28429823. The next prime is 28429847. The reversal of 28429834 is 43892482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43892482 = 2 ⋅21946241.

It can be written as a sum of positive squares in only one way, i.e., 28121809 + 308025 = 5303^2 + 555^2 .

It is a super-2 number, since 2×28429834² = 1616510922535112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7107457 + ... + 7107460.

Almost surely, 2^28429834 is an apocalyptic number.

28429834 is a deficient number, since it is larger than the sum of its proper divisors (14214920).

28429834 is a wasteful number, since it uses less digits than its factorization.

28429834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14214919.

The product of its digits is 110592, while the sum is 40.

The square root of 28429834 is about 5331.9634282317. The cubic root of 28429834 is about 305.2048574469.

The spelling of 28429834 in words is "twenty-eight million, four hundred twenty-nine thousand, eight hundred thirty-four".