30628946 has 4 divisors (see below), whose sum is σ = 45943422. Its totient is φ = 15314472.

The previous prime is 30628937. The next prime is 30628963. The reversal of 30628946 is 64982603.

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., 25959025 + 4669921 = 5095^2 + 2161^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 7657235 + ... + 7657238.

Almost surely, 2^30628946 is an apocalyptic number.

30628946 is a deficient number, since it is larger than the sum of its proper divisors (15314476).

30628946 is a wasteful number, since it uses less digits than its factorization.

30628946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15314475.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 30628946 is about 5534.3424180294. The cubic root of 30628946 is about 312.8796742052.

The spelling of 30628946 in words is "thirty million, six hundred twenty-eight thousand, nine hundred forty-six".