30220778 has 8 divisors (see below), whose sum is σ = 51807072. Its totient is φ = 12951756.

The previous prime is 30220777. The next prime is 30220789. The reversal of 30220778 is 87702203.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30220778.

It is not an unprimeable number, because it can be changed into a prime (30220777) 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, 1079300 + ... + 1079327.

It is an arithmetic number, because the mean of its divisors is an integer number (6475884).

Almost surely, 2^30220778 is an apocalyptic number.

30220778 is a deficient number, since it is larger than the sum of its proper divisors (21586294).

30220778 is a wasteful number, since it uses less digits than its factorization.

30220778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158636.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 30220778 is about 5497.3428126687. The cubic root of 30220778 is about 311.4836201341.

The spelling of 30220778 in words is "thirty million, two hundred twenty thousand, seven hundred seventy-eight".