30259021 has 8 divisors (see below), whose sum is σ = 32954040. Its totient is φ = 27616512.

The previous prime is 30259013. The next prime is 30259043. The reversal of 30259021 is 12095203.

It can be written as a sum of positive squares in 4 ways, for example, as 980100 + 29278921 = 990^2 + 5411^2 .

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 30259021 - 2³ = 30259013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30258983 and 30259001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30253021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11920 + ... + 14233.

It is an arithmetic number, because the mean of its divisors is an integer number (4119255).

Almost surely, 2^30259021 is an apocalyptic number.

It is an amenable number.

30259021 is a deficient number, since it is larger than the sum of its proper divisors (2695019).

30259021 is a wasteful number, since it uses less digits than its factorization.

30259021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26255.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 30259021 is about 5500.8200297774. The cubic root of 30259021 is about 311.6149541332.

The spelling of 30259021 in words is "thirty million, two hundred fifty-nine thousand, twenty-one".