30002021 has 8 divisors (see below), whose sum is σ = 34329984. Its totient is φ = 25684560.

The previous prime is 30002009. The next prime is 30002023. The reversal of 30002021 is 12020003.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30002021 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 (30002023) 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, 4976 + ... + 9206.

It is an arithmetic number, because the mean of its divisors is an integer number (4291248).

Almost surely, 2^30002021 is an apocalyptic number.

It is an amenable number.

30002021 is a deficient number, since it is larger than the sum of its proper divisors (4327963).

30002021 is a wasteful number, since it uses less digits than its factorization.

30002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 30002021 is about 5477.4100631594. The cubic root of 30002021 is about 310.7302279019.

Adding to 30002021 its reverse (12020003), we get a palindrome (42022024).

The spelling of 30002021 in words is "thirty million, two thousand, twenty-one".