28351943 has 2 divisors, whose sum is σ = 28351944. Its totient is φ = 28351942.

The previous prime is 28351927. The next prime is 28351957. The reversal of 28351943 is 34915382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28351943 - 2⁴ = 28351927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28351993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14175971 + 14175972.

It is an arithmetic number, because the mean of its divisors is an integer number (14175972).

Almost surely, 2^28351943 is an apocalyptic number.

28351943 is a deficient number, since it is larger than the sum of its proper divisors (1).

28351943 is an equidigital number, since it uses as much as digits as its factorization.

28351943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 28351943 is about 5324.6542610765. The cubic root of 28351943 is about 304.9258728752.

The spelling of 28351943 in words is "twenty-eight million, three hundred fifty-one thousand, nine hundred forty-three".