30333040 has 20 divisors (see below), whose sum is σ = 70524504. Its totient is φ = 12133184.

The previous prime is 30333029. The next prime is 30333047. The reversal of 30333040 is 4033303.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30333047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189502 + ... + 189661.

Almost surely, 2^30333040 is an apocalyptic number.

It is an amenable number.

30333040 is an abundant number, since it is smaller than the sum of its proper divisors (40191464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30333040 is a wasteful number, since it uses less digits than its factorization.

30333040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379176 (or 379170 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 16.

The square root of 30333040 is about 5507.5439172103. The cubic root of 30333040 is about 311.8688359471.

Adding to 30333040 its reverse (4033303), we get a palindrome (34366343).

The spelling of 30333040 in words is "thirty million, three hundred thirty-three thousand, forty".