28216342 has 32 divisors (see below), whose sum is σ = 54008064. Its totient is φ = 10735200.

The previous prime is 28216339. The next prime is 28216361. The reversal of 28216342 is 24361282.

It is a self number, because there is not a number n which added to its sum of digits gives 28216342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4492 + ... + 8752.

It is an arithmetic number, because the mean of its divisors is an integer number (1687752).

Almost surely, 2^28216342 is an apocalyptic number.

28216342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28216342 is a deficient number, since it is larger than the sum of its proper divisors (25791722).

28216342 is a wasteful number, since it uses less digits than its factorization.

28216342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324.

The product of its digits is 4608, while the sum is 28.

The square root of 28216342 is about 5311.9056844037. The cubic root of 28216342 is about 304.4389650488.

The spelling of 28216342 in words is "twenty-eight million, two hundred sixteen thousand, three hundred forty-two".