30026561 has 8 divisors (see below), whose sum is σ = 30745344. Its totient is φ = 29311200.

The previous prime is 30026551. The next prime is 30026597. The reversal of 30026561 is 16562003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30026561 - 2¹⁸ = 29764417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30026551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27716 + ... + 28778.

It is an arithmetic number, because the mean of its divisors is an integer number (3843168).

Almost surely, 2^30026561 is an apocalyptic number.

It is an amenable number.

30026561 is a deficient number, since it is larger than the sum of its proper divisors (718783).

30026561 is a wasteful number, since it uses less digits than its factorization.

30026561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30026561 is about 5479.6497150822. The cubic root of 30026561 is about 310.8149248818.

Adding to 30026561 its reverse (16562003), we get a palindrome (46588564).

The spelling of 30026561 in words is "thirty million, twenty-six thousand, five hundred sixty-one".