28372051 has 2 divisors, whose sum is σ = 28372052. Its totient is φ = 28372050.

The previous prime is 28372039. The next prime is 28372061. The reversal of 28372051 is 15027382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28372051 - 2⁷ = 28371923 is a prime.

It is equal to p_1763146 and since 28372051 and 1763146 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28372061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14186025 + 14186026.

It is an arithmetic number, because the mean of its divisors is an integer number (14186026).

Almost surely, 2^28372051 is an apocalyptic number.

28372051 is a deficient number, since it is larger than the sum of its proper divisors (1).

28372051 is an equidigital number, since it uses as much as digits as its factorization.

28372051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 28372051 is about 5326.5421241177. The cubic root of 28372051 is about 304.9979431914.

The spelling of 28372051 in words is "twenty-eight million, three hundred seventy-two thousand, fifty-one".