30328477 has 4 divisors (see below), whose sum is σ = 30401280. Its totient is φ = 30255676.

The previous prime is 30328471. The next prime is 30328481. The reversal of 30328477 is 77482303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77482303 = 4231 ⋅18313.

It is a cyclic number.

It is not a de Polignac number, because 30328477 - 2¹⁹ = 29804189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30328471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35773 + ... + 36610.

It is an arithmetic number, because the mean of its divisors is an integer number (7600320).

Almost surely, 2^30328477 is an apocalyptic number.

It is an amenable number.

30328477 is a deficient number, since it is larger than the sum of its proper divisors (72803).

30328477 is an equidigital number, since it uses as much as digits as its factorization.

30328477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72802.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 30328477 is about 5507.1296516425. The cubic root of 30328477 is about 311.8531970172.

The spelling of 30328477 in words is "thirty million, three hundred twenty-eight thousand, four hundred seventy-seven".