28604371 has 2 divisors, whose sum is σ = 28604372. Its totient is φ = 28604370.

The previous prime is 28604327. The next prime is 28604423. The reversal of 28604371 is 17340682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28604371 - 2²¹ = 26507219 is a prime.

It is not a weakly prime, because it can be changed into another prime (28604171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302185 + 14302186.

It is an arithmetic number, because the mean of its divisors is an integer number (14302186).

Almost surely, 2^28604371 is an apocalyptic number.

28604371 is a deficient number, since it is larger than the sum of its proper divisors (1).

28604371 is an equidigital number, since it uses as much as digits as its factorization.

28604371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 28604371 is about 5348.3054325646. The cubic root of 28604371 is about 305.8281568930.

The spelling of 28604371 in words is "twenty-eight million, six hundred four thousand, three hundred seventy-one".