28719544 has 16 divisors (see below), whose sum is σ = 61542000. Its totient is φ = 12308352.

The previous prime is 28719533. The next prime is 28719553. The reversal of 28719544 is 44591782.

It is a junction number, because it is equal to n+sod(n) for n = 28719497 and 28719506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256369 + ... + 256480.

It is an arithmetic number, because the mean of its divisors is an integer number (3846375).

Almost surely, 2^28719544 is an apocalyptic number.

It is an amenable number.

28719544 is an abundant number, since it is smaller than the sum of its proper divisors (32822456).

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

28719544 is a wasteful number, since it uses less digits than its factorization.

28719544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512862 (or 512858 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 28719544 is about 5359.0618581987. The cubic root of 28719544 is about 306.2380706724.

The spelling of 28719544 in words is "twenty-eight million, seven hundred nineteen thousand, five hundred forty-four".