28379946 has 16 divisors (see below), whose sum is σ = 64868544. Its totient is φ = 8108544.

The previous prime is 28379929. The next prime is 28379947. The reversal of 28379946 is 64997382.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28379895 and 28379904.

It is not an unprimeable number, because it can be changed into a prime (28379947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337815 + ... + 337898.

It is an arithmetic number, because the mean of its divisors is an integer number (4054284).

Almost surely, 2^28379946 is an apocalyptic number.

28379946 is an abundant number, since it is smaller than the sum of its proper divisors (36488598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28379946 is a wasteful number, since it uses less digits than its factorization.

28379946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675725.

The product of its digits is 653184, while the sum is 48.

The square root of 28379946 is about 5327.2831724998. The cubic root of 28379946 is about 305.0262308355.

The spelling of 28379946 in words is "twenty-eight million, three hundred seventy-nine thousand, nine hundred forty-six".