28608477 has 16 divisors (see below), whose sum is σ = 39267072. Its totient is φ = 18517760.

The previous prime is 28608473. The next prime is 28608493. The reversal of 28608477 is 77480682.

It is a cyclic number.

It is not a de Polignac number, because 28608477 - 2² = 28608473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28608473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18577 + ... + 20057.

It is an arithmetic number, because the mean of its divisors is an integer number (2454192).

Almost surely, 2^28608477 is an apocalyptic number.

It is an amenable number.

28608477 is a deficient number, since it is larger than the sum of its proper divisors (10658595).

28608477 is a wasteful number, since it uses less digits than its factorization.

28608477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 28608477 is about 5348.6892786925. The cubic root of 28608477 is about 305.8427895090.

The spelling of 28608477 in words is "twenty-eight million, six hundred eight thousand, four hundred seventy-seven".