28742951 has 2 divisors, whose sum is σ = 28742952. Its totient is φ = 28742950.

The previous prime is 28742941. The next prime is 28742977. The reversal of 28742951 is 15924782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28742951 - 2⁶ = 28742887 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28742941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14371475 + 14371476.

It is an arithmetic number, because the mean of its divisors is an integer number (14371476).

Almost surely, 2^28742951 is an apocalyptic number.

28742951 is a deficient number, since it is larger than the sum of its proper divisors (1).

28742951 is an equidigital number, since it uses as much as digits as its factorization.

28742951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 28742951 is about 5361.2452844465. The cubic root of 28742951 is about 306.3212447879.

The spelling of 28742951 in words is "twenty-eight million, seven hundred forty-two thousand, nine hundred fifty-one".