30120844890 has 48 divisors (see below), whose sum is σ = 72712471968. Its totient is φ = 7985558208.

The previous prime is 30120844847. The next prime is 30120844907. The reversal of 30120844890 is 9844802103.

It is a super-2 number, since 2×30120844890² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 881097 + ... + 914643.

It is an arithmetic number, because the mean of its divisors is an integer number (1514843166).

Almost surely, 2^30120844890 is an apocalyptic number.

30120844890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30120844890 is an abundant number, since it is smaller than the sum of its proper divisors (42591627078).

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

30120844890 is a wasteful number, since it uses less digits than its factorization.

30120844890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33903 (or 33730 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 30120844890 in words is "thirty billion, one hundred twenty million, eight hundred forty-four thousand, eight hundred ninety".