28961266 has 8 divisors (see below), whose sum is σ = 43660800. Its totient is φ = 14407668.

The previous prime is 28961243. The next prime is 28961281. The reversal of 28961266 is 66216982.

It is a happy number.

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

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, 35986 + ... + 36781.

It is an arithmetic number, because the mean of its divisors is an integer number (5457600).

Almost surely, 2^28961266 is an apocalyptic number.

28961266 is a deficient number, since it is larger than the sum of its proper divisors (14699534).

28961266 is a wasteful number, since it uses less digits than its factorization.

28961266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72968.

The product of its digits is 62208, while the sum is 40.

The square root of 28961266 is about 5381.5672438426. The cubic root of 28961266 is about 307.0948364288.

The spelling of 28961266 in words is "twenty-eight million, nine hundred sixty-one thousand, two hundred sixty-six".