30365040 has 80 divisors (see below), whose sum is σ = 99100800. Its totient is φ = 7670016.

The previous prime is 30365039. The next prime is 30365053. The reversal of 30365040 is 4056303.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 30364998 and 30365016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231 + ... + 7889.

It is an arithmetic number, because the mean of its divisors is an integer number (1238760).

Almost surely, 2^30365040 is an apocalyptic number.

30365040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30365040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49550400).

30365040 is an abundant number, since it is smaller than the sum of its proper divisors (68735760).

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

30365040 is a wasteful number, since it uses less digits than its factorization.

30365040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6694 (or 6688 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 30365040 is about 5510.4482576284. The cubic root of 30365040 is about 311.9784666269.

The spelling of 30365040 in words is "thirty million, three hundred sixty-five thousand, forty".