28372566 has 8 divisors (see below), whose sum is σ = 56745144. Its totient is φ = 9457520.

The previous prime is 28372559. The next prime is 28372571. The reversal of 28372566 is 66527382.

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

28372566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2364375 + ... + 2364386.

It is an arithmetic number, because the mean of its divisors is an integer number (7093143).

Almost surely, 2^28372566 is an apocalyptic number.

28372566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28372566 is a wasteful number, since it uses less digits than its factorization.

28372566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728766.

The product of its digits is 120960, while the sum is 39.

The square root of 28372566 is about 5326.5904667057. The cubic root of 28372566 is about 304.9997885872. Note that the first 3 decimals are identical.

The spelling of 28372566 in words is "twenty-eight million, three hundred seventy-two thousand, five hundred sixty-six".