28704371 has 2 divisors, whose sum is σ = 28704372. Its totient is φ = 28704370.

The previous prime is 28704359. The next prime is 28704397. The reversal of 28704371 is 17340782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28704371 - 2¹⁰ = 28703347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28704271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14352185 + 14352186.

It is an arithmetic number, because the mean of its divisors is an integer number (14352186).

Almost surely, 2^28704371 is an apocalyptic number.

28704371 is a deficient number, since it is larger than the sum of its proper divisors (1).

28704371 is an equidigital number, since it uses as much as digits as its factorization.

28704371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 28704371 is about 5357.6460316075. The cubic root of 28704371 is about 306.1841309955.

The spelling of 28704371 in words is "twenty-eight million, seven hundred four thousand, three hundred seventy-one".