30220478 has 8 divisors (see below), whose sum is σ = 45635400. Its totient is φ = 15008680.

The previous prime is 30220471. The next prime is 30220493. The reversal of 30220478 is 87402203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220471) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 50408 + ... + 51003.

It is an arithmetic number, because the mean of its divisors is an integer number (5704425).

Almost surely, 2^30220478 is an apocalyptic number.

30220478 is a deficient number, since it is larger than the sum of its proper divisors (15414922).

30220478 is a wasteful number, since it uses less digits than its factorization.

30220478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101562.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 30220478 is about 5497.3155266912. The cubic root of 30220478 is about 311.4825894371.

The spelling of 30220478 in words is "thirty million, two hundred twenty thousand, four hundred seventy-eight".