28550966 has 4 divisors (see below), whose sum is σ = 42826452. Its totient is φ = 14275482.

The previous prime is 28550959. The next prime is 28550971. The reversal of 28550966 is 66905582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66905582 = 2 ⋅33452791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7137740 + ... + 7137743.

It is an arithmetic number, because the mean of its divisors is an integer number (10706613).

Almost surely, 2^28550966 is an apocalyptic number.

28550966 is a deficient number, since it is larger than the sum of its proper divisors (14275486).

28550966 is a wasteful number, since it uses less digits than its factorization.

28550966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14275485.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 28550966 is about 5343.3103971227. The cubic root of 28550966 is about 305.6377089854.

The spelling of 28550966 in words is "twenty-eight million, five hundred fifty thousand, nine hundred sixty-six".