28712051 has 2 divisors, whose sum is σ = 28712052. Its totient is φ = 28712050.

The previous prime is 28712041. The next prime is 28712053. The reversal of 28712051 is 15021782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28712051 - 2¹⁸ = 28449907 is a prime.

Together with 28712053, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28712051.

It is not a weakly prime, because it can be changed into another prime (28712053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14356025 + 14356026.

It is an arithmetic number, because the mean of its divisors is an integer number (14356026).

Almost surely, 2^28712051 is an apocalyptic number.

28712051 is a deficient number, since it is larger than the sum of its proper divisors (1).

28712051 is an equidigital number, since it uses as much as digits as its factorization.

28712051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 28712051 is about 5358.3627163528. The cubic root of 28712051 is about 306.2114355994.

The spelling of 28712051 in words is "twenty-eight million, seven hundred twelve thousand, fifty-one".