28204342 has 4 divisors (see below), whose sum is σ = 42306516. Its totient is φ = 14102170.

The previous prime is 28204339. The next prime is 28204349. The reversal of 28204342 is 24340282.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28204349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7051084 + ... + 7051087.

It is an arithmetic number, because the mean of its divisors is an integer number (10576629).

Almost surely, 2^28204342 is an apocalyptic number.

28204342 is a deficient number, since it is larger than the sum of its proper divisors (14102174).

28204342 is a wasteful number, since it uses less digits than its factorization.

28204342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14102173.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 28204342 is about 5310.7760261566. The cubic root of 28204342 is about 304.3958011074.

The spelling of 28204342 in words is "twenty-eight million, two hundred four thousand, three hundred forty-two".