30228637 has 2 divisors, whose sum is σ = 30228638. Its totient is φ = 30228636.

The previous prime is 30228607. The next prime is 30228659. The reversal of 30228637 is 73682203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17189316 + 13039321 = 4146^2 + 3611^2 .

It is a cyclic number.

It is not a de Polignac number, because 30228637 - 2¹⁹ = 29704349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30228599 and 30228608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30228607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15114318 + 15114319.

It is an arithmetic number, because the mean of its divisors is an integer number (15114319).

Almost surely, 2^30228637 is an apocalyptic number.

It is an amenable number.

30228637 is a deficient number, since it is larger than the sum of its proper divisors (1).

30228637 is an equidigital number, since it uses as much as digits as its factorization.

30228637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30228637 is about 5498.0575660864. The cubic root of 30228637 is about 311.5106185302.

The spelling of 30228637 in words is "thirty million, two hundred twenty-eight thousand, six hundred thirty-seven".