30120858 has 12 divisors (see below), whose sum is σ = 65261898. Its totient is φ = 10040280.

The previous prime is 30120847. The next prime is 30120859. The reversal of 30120858 is 85802103.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 30107169 + 13689 = 5487^2 + 117^2 .

It is not an unprimeable number, because it can be changed into a prime (30120859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 836673 + ... + 836708.

Almost surely, 2^30120858 is an apocalyptic number.

30120858 is an abundant number, since it is smaller than the sum of its proper divisors (35141040).

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

30120858 is a wasteful number, since it uses less digits than its factorization.

30120858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673389 (or 1673386 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 30120858 is about 5488.2472611937. The cubic root of 30120858 is about 311.1399514175.

The spelling of 30120858 in words is "thirty million, one hundred twenty thousand, eight hundred fifty-eight".