28416749 has 2 divisors, whose sum is σ = 28416750. Its totient is φ = 28416748.

The previous prime is 28416737. The next prime is 28416757. The reversal of 28416749 is 94761482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20475625 + 7941124 = 4525^2 + 2818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28416749 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 (28416709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14208374 + 14208375.

It is an arithmetic number, because the mean of its divisors is an integer number (14208375).

Almost surely, 2^28416749 is an apocalyptic number.

It is an amenable number.

28416749 is a deficient number, since it is larger than the sum of its proper divisors (1).

28416749 is an equidigital number, since it uses as much as digits as its factorization.

28416749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 28416749 is about 5330.7362530892. The cubic root of 28416749 is about 305.1580261451.

The spelling of 28416749 in words is "twenty-eight million, four hundred sixteen thousand, seven hundred forty-nine".