28379642 has 8 divisors (see below), whose sum is σ = 42621600. Its totient is φ = 14172444.

The previous prime is 28379641. The next prime is 28379651. The reversal of 28379642 is 24697382.

It is a happy number.

28379642 is nontrivially palindromic in base 13.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28379642.

It is not an unprimeable number, because it can be changed into a prime (28379641) by changing a digit.

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, 6542 + ... + 9977.

It is an arithmetic number, because the mean of its divisors is an integer number (5327700).

Almost surely, 2^28379642 is an apocalyptic number.

28379642 is a deficient number, since it is larger than the sum of its proper divisors (14241958).

28379642 is a wasteful number, since it uses less digits than its factorization.

28379642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17380.

The product of its digits is 145152, while the sum is 41.

The square root of 28379642 is about 5327.2546400562. The cubic root of 28379642 is about 305.0251417060.

The spelling of 28379642 in words is "twenty-eight million, three hundred seventy-nine thousand, six hundred forty-two".