30147746 has 4 divisors (see below), whose sum is σ = 45221622. Its totient is φ = 15073872.

The previous prime is 30147739. The next prime is 30147757. The reversal of 30147746 is 64774103.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26925721 + 3222025 = 5189^2 + 1795^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7536935 + ... + 7536938.

Almost surely, 2^30147746 is an apocalyptic number.

30147746 is a deficient number, since it is larger than the sum of its proper divisors (15073876).

30147746 is a wasteful number, since it uses less digits than its factorization.

30147746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15073875.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 30147746 is about 5490.6963128550. The cubic root of 30147746 is about 311.2325056967.

The spelling of 30147746 in words is "thirty million, one hundred forty-seven thousand, seven hundred forty-six".