30744138 has 8 divisors (see below), whose sum is σ = 61488288. Its totient is φ = 10248044.

The previous prime is 30744127. The next prime is 30744149. The reversal of 30744138 is 83144703.

It is an interprime number because it is at equal distance from previous prime (30744127) and next prime (30744149).

It is a sphenic number, since it is the product of 3 distinct primes.

30744138 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2562006 + ... + 2562017.

It is an arithmetic number, because the mean of its divisors is an integer number (7686036).

Almost surely, 2^30744138 is an apocalyptic number.

30744138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30744138 is a wasteful number, since it uses less digits than its factorization.

30744138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124028.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 30744138 is about 5544.7396692721. The cubic root of 30744138 is about 313.2714185295.

The spelling of 30744138 in words is "thirty million, seven hundred forty-four thousand, one hundred thirty-eight".