30520046 has 4 divisors (see below), whose sum is σ = 45780072. Its totient is φ = 15260022.

The previous prime is 30520043. The next prime is 30520073. The reversal of 30520046 is 64002503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64002503 = 149 ⋅429547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30520043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7630010 + ... + 7630013.

It is an arithmetic number, because the mean of its divisors is an integer number (11445018).

Almost surely, 2^30520046 is an apocalyptic number.

30520046 is a deficient number, since it is larger than the sum of its proper divisors (15260026).

30520046 is a wasteful number, since it uses less digits than its factorization.

30520046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15260025.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30520046 is about 5524.4950900512. The cubic root of 30520046 is about 312.5084234529.

Adding to 30520046 its reverse (64002503), we get a palindrome (94522549).

The spelling of 30520046 in words is "thirty million, five hundred twenty thousand, forty-six".