30147745 has 8 divisors (see below), whose sum is σ = 36221184. Its totient is φ = 24088944.

The previous prime is 30147739. The next prime is 30147757. The reversal of 30147745 is 54774103.

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

It is a cyclic number.

It is not a de Polignac number, because 30147745 - 2⁵ = 30147713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552 + ... + 7918.

It is an arithmetic number, because the mean of its divisors is an integer number (4527648).

Almost surely, 2^30147745 is an apocalyptic number.

It is an amenable number.

30147745 is a deficient number, since it is larger than the sum of its proper divisors (6073439).

30147745 is an equidigital number, since it uses as much as digits as its factorization.

30147745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7319.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 30147745 is about 5490.6962217919. The cubic root of 30147745 is about 311.2325022555.

The spelling of 30147745 in words is "thirty million, one hundred forty-seven thousand, seven hundred forty-five".