30024921 has 16 divisors (see below), whose sum is σ = 42368000. Its totient is φ = 18860688.

The previous prime is 30024901. The next prime is 30024931. The reversal of 30024921 is 12942003.

It is not a de Polignac number, because 30024921 - 2⁶ = 30024857 is a prime.

It is the 5480-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30024901) by changing a digit.

It is a nontrivial repunit in base 5479.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10020 + ... + 12666.

It is an arithmetic number, because the mean of its divisors is an integer number (2648000).

Almost surely, 2^30024921 is an apocalyptic number.

It is an amenable number.

30024921 is a deficient number, since it is larger than the sum of its proper divisors (12343079).

30024921 is a wasteful number, since it uses less digits than its factorization.

30024921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30024921 is about 5479.5000684369. The cubic root of 30024921 is about 310.8092660502.

Adding to 30024921 its reverse (12942003), we get a palindrome (42966924).

The spelling of 30024921 in words is "thirty million, twenty-four thousand, nine hundred twenty-one".