28744379 has 2 divisors, whose sum is σ = 28744380. Its totient is φ = 28744378.

The previous prime is 28744369. The next prime is 28744393. The reversal of 28744379 is 97344782.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28744379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28744369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14372189 + 14372190.

It is an arithmetic number, because the mean of its divisors is an integer number (14372190).

Almost surely, 2^28744379 is an apocalyptic number.

28744379 is a deficient number, since it is larger than the sum of its proper divisors (1).

28744379 is an equidigital number, since it uses as much as digits as its factorization.

28744379 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 28744379 is about 5361.3784608065. The cubic root of 28744379 is about 306.3263175620.

The spelling of 28744379 in words is "twenty-eight million, seven hundred forty-four thousand, three hundred seventy-nine".