30021352 has 8 divisors (see below), whose sum is σ = 56290050. Its totient is φ = 15010672.

The previous prime is 30021347. The next prime is 30021377. The reversal of 30021352 is 25312003.

It can be written as a sum of positive squares in only one way, i.e., 26357956 + 3663396 = 5134^2 + 1914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1876327 + ... + 1876342.

Almost surely, 2^30021352 is an apocalyptic number.

It is an amenable number.

30021352 is a deficient number, since it is larger than the sum of its proper divisors (26268698).

30021352 is a wasteful number, since it uses less digits than its factorization.

30021352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752675 (or 3752671 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30021352 is about 5479.1743903621. The cubic root of 30021352 is about 310.7969504782.

Adding to 30021352 its reverse (25312003), we get a palindrome (55333355).

The spelling of 30021352 in words is "thirty million, twenty-one thousand, three hundred fifty-two".