30301040 has 80 divisors (see below), whose sum is σ = 87851520. Its totient is φ = 9442560.

The previous prime is 30301031. The next prime is 30301109. The reversal of 30301040 is 4010303.

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

It is a Harshad number since it is a multiple of its sum of digits (11).

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, 3701 + ... + 8619.

It is an arithmetic number, because the mean of its divisors is an integer number (1098144).

Almost surely, 2^30301040 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 30301040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43925760).

30301040 is an abundant number, since it is smaller than the sum of its proper divisors (57550480).

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

30301040 is a wasteful number, since it uses less digits than its factorization.

30301040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950 (or 4944 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30301040 is about 5504.6380444131. The cubic root of 30301040 is about 311.7591281365.

Adding to 30301040 its reverse (4010303), we get a palindrome (34311343).

The spelling of 30301040 in words is "thirty million, three hundred one thousand, forty".