28019796 has 48 divisors (see below), whose sum is σ = 77973504. Its totient is φ = 7657056.

The previous prime is 28019779. The next prime is 28019807. The reversal of 28019796 is 69791082.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5320 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (1624448).

Almost surely, 2^28019796 is an apocalyptic number.

It is an amenable number.

28019796 is an abundant number, since it is smaller than the sum of its proper divisors (49953708).

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

28019796 is a wasteful number, since it uses less digits than its factorization.

28019796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14540 (or 14538 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 28019796 is about 5293.3728378039. The cubic root of 28019796 is about 303.7304426094.

The spelling of 28019796 in words is "twenty-eight million, nineteen thousand, seven hundred ninety-six".