28988519 has 32 divisors (see below), whose sum is σ = 36827136. Its totient is φ = 22256640.

The previous prime is 28988507. The next prime is 28988521. The reversal of 28988519 is 91588982.

It is not a de Polignac number, because 28988519 - 2⁸ = 28988263 is a prime.

It is a super-2 number, since 2×28988519² = 1680668467626722, 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 (28988419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397067 + ... + 397139.

It is an arithmetic number, because the mean of its divisors is an integer number (1150848).

Almost surely, 2^28988519 is an apocalyptic number.

28988519 is a deficient number, since it is larger than the sum of its proper divisors (7838617).

28988519 is a wasteful number, since it uses less digits than its factorization.

28988519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215.

The product of its digits is 414720, while the sum is 50.

The square root of 28988519 is about 5384.0987175200. The cubic root of 28988519 is about 307.1911332291.

The spelling of 28988519 in words is "twenty-eight million, nine hundred eighty-eight thousand, five hundred nineteen".