22728007 has 2 divisors, whose sum is σ = 22728008. Its totient is φ = 22728006.

The previous prime is 22728001. The next prime is 22728059. The reversal of 22728007 is 70082722.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22728007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22728001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11364003 + 11364004.

It is an arithmetic number, because the mean of its divisors is an integer number (11364004).

Almost surely, 2^22728007 is an apocalyptic number.

22728007 is a deficient number, since it is larger than the sum of its proper divisors (1).

22728007 is an equidigital number, since it uses as much as digits as its factorization.

22728007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 22728007 is about 4767.3899567793. The cubic root of 22728007 is about 283.2612179401.

The spelling of 22728007 in words is "twenty-two million, seven hundred twenty-eight thousand, seven".