28801719 has 6 divisors (see below), whose sum is σ = 41602496. Its totient is φ = 19201140.

The previous prime is 28801709. The next prime is 28801783. The reversal of 28801719 is 91710882.

It is not a de Polignac number, because 28801719 - 2¹² = 28797623 is a prime.

It is a super-2 number, since 2×28801719² = 1659078034709922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28801709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1600087 + ... + 1600104.

Almost surely, 2^28801719 is an apocalyptic number.

28801719 is a deficient number, since it is larger than the sum of its proper divisors (12800777).

28801719 is a wasteful number, since it uses less digits than its factorization.

28801719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200197 (or 3200194 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 28801719 is about 5366.7233019786. The cubic root of 28801719 is about 306.5298713820.

The spelling of 28801719 in words is "twenty-eight million, eight hundred one thousand, seven hundred nineteen".