30744140 has 48 divisors (see below), whose sum is σ = 75516672. Its totient is φ = 10293696.

The previous prime is 30744127. The next prime is 30744149. The reversal of 30744140 is 4144703.

It is not an unprimeable number, because it can be changed into a prime (30744149) 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 15 ways as a sum of consecutive naturals, for example, 3467 + ... + 8573.

It is an arithmetic number, because the mean of its divisors is an integer number (1573264).

Almost surely, 2^30744140 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 30744140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37758336).

30744140 is an abundant number, since it is smaller than the sum of its proper divisors (44772532).

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

30744140 is a wasteful number, since it uses less digits than its factorization.

30744140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166 (or 5164 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 30744140 is about 5544.7398496232. The cubic root of 30744140 is about 313.2714253225.

Adding to 30744140 its reverse (4144703), we get a palindrome (34888843).

The spelling of 30744140 in words is "thirty million, seven hundred forty-four thousand, one hundred forty".