28019336 has 64 divisors (see below), whose sum is σ = 58320000. Its totient is φ = 12576256.

The previous prime is 28019317. The next prime is 28019347. The reversal of 28019336 is 63391082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314780 + ... + 314868.

It is an arithmetic number, because the mean of its divisors is an integer number (911250).

Almost surely, 2^28019336 is an apocalyptic number.

It is an amenable number.

28019336 is an abundant number, since it is smaller than the sum of its proper divisors (30300664).

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

28019336 is a wasteful number, since it uses less digits than its factorization.

28019336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 28019336 is about 5293.3293870682. The cubic root of 28019336 is about 303.7287804897.

The spelling of 28019336 in words is "twenty-eight million, nineteen thousand, three hundred thirty-six".