28342019 has 8 divisors (see below), whose sum is σ = 29421360. Its totient is φ = 27269536.

The previous prime is 28341997. The next prime is 28342021. The reversal of 28342019 is 91024382.

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

It is a cyclic number.

It is not a de Polignac number, because 28342019 - 2¹² = 28337923 is a prime.

It is a super-2 number, since 2×28342019² = 1606540081992722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28341982 and 28342000.

It is not an unprimeable number, because it can be changed into a prime (28342099) 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, 7652 + ... + 10734.

It is an arithmetic number, because the mean of its divisors is an integer number (3677670).

Almost surely, 2^28342019 is an apocalyptic number.

28342019 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28342019 is a deficient number, since it is larger than the sum of its proper divisors (1079341).

28342019 is a wasteful number, since it uses less digits than its factorization.

28342019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28342019 is about 5323.7222880237. The cubic root of 28342019 is about 304.8902910986.

The spelling of 28342019 in words is "twenty-eight million, three hundred forty-two thousand, nineteen".