28920927 has 48 divisors (see below), whose sum is σ = 48460032. Its totient is φ = 15240960.

The previous prime is 28920919. The next prime is 28920943. The reversal of 28920927 is 72902982.

It is not a de Polignac number, because 28920927 - 2³ = 28920919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28920977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177348 + ... + 177510.

It is an arithmetic number, because the mean of its divisors is an integer number (1009584).

Almost surely, 2^28920927 is an apocalyptic number.

28920927 is a deficient number, since it is larger than the sum of its proper divisors (19539105).

28920927 is a wasteful number, since it uses less digits than its factorization.

28920927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 28920927 is about 5377.8180519612. The cubic root of 28920927 is about 306.9521901025.

The spelling of 28920927 in words is "twenty-eight million, nine hundred twenty thousand, nine hundred twenty-seven".