28908077 has 8 divisors (see below), whose sum is σ = 31674240. Its totient is φ = 26164960.

The previous prime is 28908031. The next prime is 28908091. The reversal of 28908077 is 77080982.

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

It is a cyclic number.

It is not a de Polignac number, because 28908077 - 2⁶ = 28908013 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 (28901077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3077 + ... + 8202.

It is an arithmetic number, because the mean of its divisors is an integer number (3959280).

Almost surely, 2^28908077 is an apocalyptic number.

It is an amenable number.

28908077 is a deficient number, since it is larger than the sum of its proper divisors (2766163).

28908077 is a wasteful number, since it uses less digits than its factorization.

28908077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11523.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 28908077 is about 5376.6231967658. The cubic root of 28908077 is about 306.9067222196.

The spelling of 28908077 in words is "twenty-eight million, nine hundred eight thousand, seventy-seven".