30209981040 has 120 divisors (see below), whose sum is σ = 101986829568. Its totient is φ = 8013780480.

The previous prime is 30209980979. The next prime is 30209981047. The reversal of 30209981040 is 4018990203.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30209980986 and 30209981004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30209981047) 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 23 ways as a sum of consecutive naturals, for example, 27682 + ... + 247358.

Almost surely, 2^30209981040 is an apocalyptic number.

30209981040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30209981040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50993414784).

30209981040 is an abundant number, since it is smaller than the sum of its proper divisors (71776848528).

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

30209981040 is a wasteful number, since it uses less digits than its factorization.

30209981040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219887 (or 219878 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 30209981040 in words is "thirty billion, two hundred nine million, nine hundred eighty-one thousand, forty".