28980527 has 4 divisors (see below), whose sum is σ = 29189160. Its totient is φ = 28771896.

The previous prime is 28980517. The next prime is 28980557. The reversal of 28980527 is 72508982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28980527 - 2⁶ = 28980463 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 (28980517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104108 + ... + 104385.

It is an arithmetic number, because the mean of its divisors is an integer number (7297290).

Almost surely, 2^28980527 is an apocalyptic number.

28980527 is a deficient number, since it is larger than the sum of its proper divisors (208633).

28980527 is a wasteful number, since it uses less digits than its factorization.

28980527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208632.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28980527 is about 5383.3564808584. The cubic root of 28980527 is about 307.1629002450.

The spelling of 28980527 in words is "twenty-eight million, nine hundred eighty thousand, five hundred twenty-seven".