28495019 has 12 divisors (see below), whose sum is σ = 33855264. Its totient is φ = 23902704.

The previous prime is 28495013. The next prime is 28495021. The reversal of 28495019 is 91059482.

It is a de Polignac number, because none of the positive numbers 2^k-28495019 is a prime.

It is a super-2 number, since 2×28495019² = 1623932215620722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28495013) 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, 3884 + ... + 8489.

It is an arithmetic number, because the mean of its divisors is an integer number (2821272).

Almost surely, 2^28495019 is an apocalyptic number.

28495019 is a deficient number, since it is larger than the sum of its proper divisors (5360245).

28495019 is a wasteful number, since it uses less digits than its factorization.

28495019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12434 (or 12427 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 28495019 is about 5338.0725922378. The cubic root of 28495019 is about 305.4379411481.

The spelling of 28495019 in words is "twenty-eight million, four hundred ninety-five thousand, nineteen".