28612838 has 8 divisors (see below), whose sum is σ = 43087032. Its totient is φ = 14250496.

The previous prime is 28612823. The next prime is 28612849. The reversal of 28612838 is 83821682.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27320 + ... + 28347.

It is an arithmetic number, because the mean of its divisors is an integer number (5385879).

Almost surely, 2^28612838 is an apocalyptic number.

28612838 is a deficient number, since it is larger than the sum of its proper divisors (14474194).

28612838 is a wasteful number, since it uses less digits than its factorization.

28612838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55926.

The product of its digits is 36864, while the sum is 38.

The square root of 28612838 is about 5349.0969331281. The cubic root of 28612838 is about 305.8583293393.

The spelling of 28612838 in words is "twenty-eight million, six hundred twelve thousand, eight hundred thirty-eight".