28497519 has 12 divisors (see below), whose sum is σ = 42120936. Its totient is φ = 18556272.

The previous prime is 28497509. The next prime is 28497551. The reversal of 28497519 is 91579482.

It is not a de Polignac number, because 28497519 - 2⁴ = 28497503 is a prime.

It is a super-2 number, since 2×28497519² = 1624217178310722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28497509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36432 + ... + 37205.

It is an arithmetic number, because the mean of its divisors is an integer number (3510078).

Almost surely, 2^28497519 is an apocalyptic number.

28497519 is a deficient number, since it is larger than the sum of its proper divisors (13623417).

28497519 is a wasteful number, since it uses less digits than its factorization.

28497519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73686 (or 73683 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 28497519 is about 5338.3067540185. The cubic root of 28497519 is about 305.4468733820.

The spelling of 28497519 in words is "twenty-eight million, four hundred ninety-seven thousand, five hundred nineteen".