30072661236 has 192 divisors, whose sum is σ = 84575232000. Its totient is φ = 9208494720.

The previous prime is 30072661219. The next prime is 30072661237. The reversal of 30072661236 is 63216627003.

30072661236 is a `hidden beast` number, since 3 + 0 + 0 + 7 + 2 + 6 + 612 + 36 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30072661236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30072661237) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32722785 + ... + 32723703.

It is an arithmetic number, because the mean of its divisors is an integer number (440496000).

Almost surely, 2^30072661236 is an apocalyptic number.

30072661236 is a gapful number since it is divisible by the number (36) 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 30072661236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42287616000).

30072661236 is an abundant number, since it is smaller than the sum of its proper divisors (54502570764).

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

30072661236 is a wasteful number, since it uses less digits than its factorization.

30072661236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419 (or 1411 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 30072661236 in words is "thirty billion, seventy-two million, six hundred sixty-one thousand, two hundred thirty-six".