28019794 has 16 divisors (see below), whose sum is σ = 48264480. Its totient is φ = 12065760.

The previous prime is 28019779. The next prime is 28019807. The reversal of 28019794 is 49791082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33099 + ... + 33934.

It is an arithmetic number, because the mean of its divisors is an integer number (3016530).

Almost surely, 2^28019794 is an apocalyptic number.

28019794 is a deficient number, since it is larger than the sum of its proper divisors (20244686).

28019794 is a wasteful number, since it uses less digits than its factorization.

28019794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67065.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 28019794 is about 5293.3726488884. The cubic root of 28019794 is about 303.7304353829.

The spelling of 28019794 in words is "twenty-eight million, nineteen thousand, seven hundred ninety-four".