30330040 has 128 divisors (see below), whose sum is σ = 80559360. Its totient is φ = 10174464.

The previous prime is 30330017. The next prime is 30330067. The reversal of 30330040 is 4003303.

It is a super-2 number, since 2×30330040² = 1839822652803200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 30330040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 415444 + ... + 415516.

It is an arithmetic number, because the mean of its divisors is an integer number (629370).

Almost surely, 2^30330040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30330040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40279680).

30330040 is an abundant number, since it is smaller than the sum of its proper divisors (50229320).

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

30330040 is a wasteful number, since it uses less digits than its factorization.

30330040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 13.

The square root of 30330040 is about 5507.2715567693. The cubic root of 30330040 is about 311.8585541185.

Adding to 30330040 its reverse (4003303), we get a palindrome (34333343).

The spelling of 30330040 in words is "thirty million, three hundred thirty thousand, forty".