28151087 has 2 divisors, whose sum is σ = 28151088. Its totient is φ = 28151086.

The previous prime is 28151059. The next prime is 28151089. The reversal of 28151087 is 78015182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28151087 - 2⁸ = 28150831 is a prime.

Together with 28151089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28151089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14075543 + 14075544.

It is an arithmetic number, because the mean of its divisors is an integer number (14075544).

Almost surely, 2^28151087 is an apocalyptic number.

28151087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28151087 is an equidigital number, since it uses as much as digits as its factorization.

28151087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 28151087 is about 5305.7597947891. The cubic root of 28151087 is about 304.2040952586.

The spelling of 28151087 in words is "twenty-eight million, one hundred fifty-one thousand, eighty-seven".