28750766 has 8 divisors (see below), whose sum is σ = 47046744. Its totient is φ = 13068520.

The previous prime is 28750753. The next prime is 28750769. The reversal of 28750766 is 66705782.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28750769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653405 + ... + 653448.

It is an arithmetic number, because the mean of its divisors is an integer number (5880843).

Almost surely, 2^28750766 is an apocalyptic number.

28750766 is a deficient number, since it is larger than the sum of its proper divisors (18295978).

28750766 is a wasteful number, since it uses less digits than its factorization.

28750766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306866.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 28750766 is about 5361.9740767743. The cubic root of 28750766 is about 306.3490044474.

The spelling of 28750766 in words is "twenty-eight million, seven hundred fifty thousand, seven hundred sixty-six".