28996525 has 6 divisors (see below), whose sum is σ = 35955722. Its totient is φ = 23197200.

The previous prime is 28996523. The next prime is 28996529. The reversal of 28996525 is 52569982.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1054729 + 27941796 = 1027^2 + 5286^2 .

It is not a de Polignac number, because 28996525 - 2¹ = 28996523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28996523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 579906 + ... + 579955.

Almost surely, 2^28996525 is an apocalyptic number.

28996525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28996525 is a deficient number, since it is larger than the sum of its proper divisors (6959197).

28996525 is a wasteful number, since it uses less digits than its factorization.

28996525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159871 (or 1159866 counting only the distinct ones).

The product of its digits is 388800, while the sum is 46.

The square root of 28996525 is about 5384.8421518184. The cubic root of 28996525 is about 307.2194104681.

The spelling of 28996525 in words is "twenty-eight million, nine hundred ninety-six thousand, five hundred twenty-five".