28059394 has 16 divisors (see below), whose sum is σ = 47157696. Its totient is φ = 12409200.

The previous prime is 28059391. The next prime is 28059403. The reversal of 28059394 is 49395082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28059391) 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, 16422 + ... + 18049.

It is an arithmetic number, because the mean of its divisors is an integer number (2947356).

Almost surely, 2^28059394 is an apocalyptic number.

28059394 is a deficient number, since it is larger than the sum of its proper divisors (19098302).

28059394 is a wasteful number, since it uses less digits than its factorization.

28059394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34521.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 28059394 is about 5297.1118545864. Note that the first 3 decimals coincide. The cubic root of 28059394 is about 303.8734540822.

It can be divided in two parts, 2805 and 9394, that multiplied together give a triangular number (26350170 = T₇₂₅₉).

The spelling of 28059394 in words is "twenty-eight million, fifty-nine thousand, three hundred ninety-four".