30172064 has 96 divisors (see below), whose sum is σ = 68901840. Its totient is φ = 12902400.

The previous prime is 30172063. The next prime is 30172081. The reversal of 30172064 is 46027103.

It can be written as a sum of positive squares in 8 ways, for example, as 10000 + 30162064 = 100^2 + 5492^2 .

It is not an unprimeable number, because it can be changed into a prime (30172063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494594 + ... + 494654.

Almost surely, 2^30172064 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 30172064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34450920).

30172064 is an abundant number, since it is smaller than the sum of its proper divisors (38729776).

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

30172064 is a wasteful number, since it uses less digits than its factorization.

30172064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 30172064 is about 5492.9103397015. The cubic root of 30172064 is about 311.3161661024.

Adding to 30172064 its reverse (46027103), we get a palindrome (76199167).

The spelling of 30172064 in words is "thirty million, one hundred seventy-two thousand, sixty-four".