28005342 has 16 divisors (see below), whose sum is σ = 56720640. Its totient is φ = 9216792.

The previous prime is 28005331. The next prime is 28005347. The reversal of 28005342 is 24350082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28005347) 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, 29068 + ... + 30015.

It is an arithmetic number, because the mean of its divisors is an integer number (3545040).

Almost surely, 2^28005342 is an apocalyptic number.

28005342 is an abundant number, since it is smaller than the sum of its proper divisors (28715298).

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

28005342 is a wasteful number, since it uses less digits than its factorization.

28005342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59167.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 28005342 is about 5292.0073696094. The cubic root of 28005342 is about 303.6782072195.

The spelling of 28005342 in words is "twenty-eight million, five thousand, three hundred forty-two".