28325537 has 8 divisors (see below), whose sum is σ = 29862912. Its totient is φ = 26827200.

The previous prime is 28325527. The next prime is 28325543. The reversal of 28325537 is 73552382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28325537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28325497 and 28325506.

It is not an unprimeable number, because it can be changed into a prime (28325527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8264 + ... + 11177.

It is an arithmetic number, because the mean of its divisors is an integer number (3732864).

Almost surely, 2^28325537 is an apocalyptic number.

It is an amenable number.

28325537 is a deficient number, since it is larger than the sum of its proper divisors (1537375).

28325537 is a wasteful number, since it uses less digits than its factorization.

28325537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19519.

The product of its digits is 50400, while the sum is 35.

The square root of 28325537 is about 5322.1740858412. The cubic root of 28325537 is about 304.8311777351.

The spelling of 28325537 in words is "twenty-eight million, three hundred twenty-five thousand, five hundred thirty-seven".