30449021 has 8 divisors (see below), whose sum is σ = 31019424. Its totient is φ = 29882160.

The previous prime is 30449011. The next prime is 30449047. The reversal of 30449021 is 12094403.

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 30449021 - 2¹⁰ = 30447997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30449011) 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, 21491 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (3877428).

Almost surely, 2^30449021 is an apocalyptic number.

It is an amenable number.

30449021 is a deficient number, since it is larger than the sum of its proper divisors (570403).

30449021 is a wasteful number, since it uses less digits than its factorization.

30449021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30449021 is about 5518.0631565795. The cubic root of 30449021 is about 312.2658162293.

The spelling of 30449021 in words is "thirty million, four hundred forty-nine thousand, twenty-one".