30220278 has 32 divisors (see below), whose sum is σ = 66223872. Its totient is φ = 9117600.

The previous prime is 30220277. The next prime is 30220327. The reversal of 30220278 is 87202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16488 + ... + 18228.

It is an arithmetic number, because the mean of its divisors is an integer number (2069496).

Almost surely, 2^30220278 is an apocalyptic number.

30220278 is an abundant number, since it is smaller than the sum of its proper divisors (36003594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30220278 is a wasteful number, since it uses less digits than its factorization.

30220278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 30220278 is about 5497.2973359643. The cubic root of 30220278 is about 311.4819023020.

The spelling of 30220278 in words is "thirty million, two hundred twenty thousand, two hundred seventy-eight".