28655366 has 4 divisors (see below), whose sum is σ = 42983052. Its totient is φ = 14327682.

The previous prime is 28655359. The next prime is 28655369. The reversal of 28655366 is 66355682.

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

It is a super-2 number, since 2×28655366² = 1642260001187912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28655369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7163840 + ... + 7163843.

It is an arithmetic number, because the mean of its divisors is an integer number (10745763).

Almost surely, 2^28655366 is an apocalyptic number.

28655366 is a deficient number, since it is larger than the sum of its proper divisors (14327686).

28655366 is a wasteful number, since it uses less digits than its factorization.

28655366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14327685.

The product of its digits is 259200, while the sum is 41.

The square root of 28655366 is about 5353.0707075472. The cubic root of 28655366 is about 306.0097893689.

The spelling of 28655366 in words is "twenty-eight million, six hundred fifty-five thousand, three hundred sixty-six".