28412839 has 8 divisors (see below), whose sum is σ = 34969760. Its totient is φ = 22480416.

The previous prime is 28412827. The next prime is 28412861. The reversal of 28412839 is 93821482.

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

It is not a de Polignac number, because 28412839 - 2⁹ = 28412327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28412798 and 28412807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28412819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156024 + ... + 156205.

It is an arithmetic number, because the mean of its divisors is an integer number (4371220).

Almost surely, 2^28412839 is an apocalyptic number.

28412839 is a deficient number, since it is larger than the sum of its proper divisors (6556921).

28412839 is a wasteful number, since it uses less digits than its factorization.

28412839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312249.

The product of its digits is 27648, while the sum is 37.

The square root of 28412839 is about 5330.3694993874. The cubic root of 28412839 is about 305.1440294394.

The spelling of 28412839 in words is "twenty-eight million, four hundred twelve thousand, eight hundred thirty-nine".