30505946 has 4 divisors (see below), whose sum is σ = 45758922. Its totient is φ = 15252972.

The previous prime is 30505901. The next prime is 30505957. The reversal of 30505946 is 64950503.

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., 20802721 + 9703225 = 4561^2 + 3115^2 .

It is a super-2 number, since 2×30505946² = 1861225482709832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7626485 + ... + 7626488.

Almost surely, 2^30505946 is an apocalyptic number.

30505946 is a deficient number, since it is larger than the sum of its proper divisors (15252976).

30505946 is a wasteful number, since it uses less digits than its factorization.

30505946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15252975.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 30505946 is about 5523.2188079054. The cubic root of 30505946 is about 312.4602906343.

The spelling of 30505946 in words is "thirty million, five hundred five thousand, nine hundred forty-six".