28906934 has 8 divisors (see below), whose sum is σ = 49554768. Its totient is φ = 12388680.

The previous prime is 28906901. The next prime is 28906951. The reversal of 28906934 is 43960982.

It is a happy number.

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

It is a super-2 number, since 2×28906934² = 1671221666560712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28906891 and 28906900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032377 + ... + 1032404.

It is an arithmetic number, because the mean of its divisors is an integer number (6194346).

Almost surely, 2^28906934 is an apocalyptic number.

28906934 is a deficient number, since it is larger than the sum of its proper divisors (20647834).

28906934 is a wasteful number, since it uses less digits than its factorization.

28906934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064790.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 28906934 is about 5376.5169022333. The cubic root of 28906934 is about 306.9026772255.

The spelling of 28906934 in words is "twenty-eight million, nine hundred six thousand, nine hundred thirty-four".