30228870 has 32 divisors (see below), whose sum is σ = 82914048. Its totient is φ = 6909408.

The previous prime is 30228857. The next prime is 30228881. The reversal of 30228870 is 7882203.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71764 + ... + 72183.

It is an arithmetic number, because the mean of its divisors is an integer number (2591064).

Almost surely, 2^30228870 is an apocalyptic number.

30228870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30228870 is an abundant number, since it is smaller than the sum of its proper divisors (52685178).

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

30228870 is a wasteful number, since it uses less digits than its factorization.

30228870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143964.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30228870 is about 5498.0787553472. The cubic root of 30228870 is about 311.5114188947.

The spelling of 30228870 in words is "thirty million, two hundred twenty-eight thousand, eight hundred seventy".