28066151 has 4 divisors (see below), whose sum is σ = 28109400. Its totient is φ = 28022904.

The previous prime is 28066147. The next prime is 28066153. The reversal of 28066151 is 15166082.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28066151 - 2² = 28066147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28066153) 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, 20636 + ... + 21953.

It is an arithmetic number, because the mean of its divisors is an integer number (7027350).

Almost surely, 2^28066151 is an apocalyptic number.

28066151 is a deficient number, since it is larger than the sum of its proper divisors (43249).

28066151 is an equidigital number, since it uses as much as digits as its factorization.

28066151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43248.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 28066151 is about 5297.7496165825. The cubic root of 28066151 is about 303.8978441092.

The spelling of 28066151 in words is "twenty-eight million, sixty-six thousand, one hundred fifty-one".