28825497 has 8 divisors (see below), whose sum is σ = 42704480. Its totient is φ = 19216980.

The previous prime is 28825487. The next prime is 28825499. The reversal of 28825497 is 79452882.

28825497 is a `hidden beast` number, since 28 + 82 + 549 + 7 = 666.

It is not a de Polignac number, because 28825497 - 2¹⁶ = 28759961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28825499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533779 + ... + 533832.

It is an arithmetic number, because the mean of its divisors is an integer number (5338060).

Almost surely, 2^28825497 is an apocalyptic number.

28825497 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28825497 is a deficient number, since it is larger than the sum of its proper divisors (13878983).

28825497 is a wasteful number, since it uses less digits than its factorization.

28825497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067620 (or 1067614 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 28825497 is about 5368.9381631753. The cubic root of 28825497 is about 306.6142027191.

The spelling of 28825497 in words is "twenty-eight million, eight hundred twenty-five thousand, four hundred ninety-seven".