30824140 has 48 divisors (see below), whose sum is σ = 68257728. Its totient is φ = 11669504.

The previous prime is 30824107. The next prime is 30824147. The reversal of 30824140 is 4142803.

It is not an unprimeable number, because it can be changed into a prime (30824147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51684 + ... + 52276.

It is an arithmetic number, because the mean of its divisors is an integer number (1422036).

Almost surely, 2^30824140 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 30824140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34128864).

30824140 is an abundant number, since it is smaller than the sum of its proper divisors (37433588).

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

30824140 is a wasteful number, since it uses less digits than its factorization.

30824140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 30824140 is about 5551.9492072605. The cubic root of 30824140 is about 313.5429134556.

Adding to 30824140 its reverse (4142803), we get a palindrome (34966943).

The spelling of 30824140 in words is "thirty million, eight hundred twenty-four thousand, one hundred forty".