28434797 has 2 divisors, whose sum is σ = 28434798. Its totient is φ = 28434796.

The previous prime is 28434787. The next prime is 28434817. The reversal of 28434797 is 79743482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27237961 + 1196836 = 5219^2 + 1094^2 .

It is a cyclic number.

It is not a de Polignac number, because 28434797 - 2⁸ = 28434541 is a 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 (28434767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14217398 + 14217399.

It is an arithmetic number, because the mean of its divisors is an integer number (14217399).

Almost surely, 2^28434797 is an apocalyptic number.

It is an amenable number.

28434797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28434797 is an equidigital number, since it uses as much as digits as its factorization.

28434797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 28434797 is about 5332.4288087137. The cubic root of 28434797 is about 305.2226162981. Note that the first 3 decimals are identical.

The spelling of 28434797 in words is "twenty-eight million, four hundred thirty-four thousand, seven hundred ninety-seven".