30169944 has 96 divisors (see below), whose sum is σ = 96445440. Its totient is φ = 8337600.

The previous prime is 30169943. The next prime is 30169963. The reversal of 30169944 is 44996103.

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 = 30169899 and 30169908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30169943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14659 + ... + 16589.

It is an arithmetic number, because the mean of its divisors is an integer number (1004640).

Almost surely, 2^30169944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30169944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48222720).

30169944 is an abundant number, since it is smaller than the sum of its proper divisors (66275496).

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

30169944 is a wasteful number, since it uses less digits than its factorization.

30169944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30169944 is about 5492.7173602872. The cubic root of 30169944 is about 311.3088745260.

It can be divided in two parts, 30169 and 944, that added together give a palindrome (31113).

The spelling of 30169944 in words is "thirty million, one hundred sixty-nine thousand, nine hundred forty-four".