28645051 has 16 divisors (see below), whose sum is σ = 32194368. Its totient is φ = 25344000.

The previous prime is 28645039. The next prime is 28645063. The reversal of 28645051 is 15054682.

It is an interprime number because it is at equal distance from previous prime (28645039) and next prime (28645063).

It is a cyclic number.

It is not a de Polignac number, because 28645051 - 2¹¹ = 28643003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28645081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23251 + ... + 24451.

It is an arithmetic number, because the mean of its divisors is an integer number (2012148).

Almost surely, 2^28645051 is an apocalyptic number.

28645051 is a deficient number, since it is larger than the sum of its proper divisors (3549317).

28645051 is a wasteful number, since it uses less digits than its factorization.

28645051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 28645051 is about 5352.1071551306. The cubic root of 28645051 is about 305.9730671042.

The spelling of 28645051 in words is "twenty-eight million, six hundred forty-five thousand, fifty-one".