30172464 has 120 divisors (see below), whose sum is σ = 99234720. Its totient is φ = 8377344.

The previous prime is 30172463. The next prime is 30172489. The reversal of 30172464 is 46427103.

30172464 is a `hidden beast` number, since 30 + 172 + 464 = 666.

It is not an unprimeable number, because it can be changed into a prime (30172463) 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 23 ways as a sum of consecutive naturals, for example, 36892 + ... + 37700.

It is an arithmetic number, because the mean of its divisors is an integer number (826956).

Almost surely, 2^30172464 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 30172464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49617360).

30172464 is an abundant number, since it is smaller than the sum of its proper divisors (69062256).

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

30172464 is a wasteful number, since it uses less digits than its factorization.

30172464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30172464 is about 5492.9467501515. The cubic root of 30172464 is about 311.3175418333.

Adding to 30172464 its reverse (46427103), we get a palindrome (76599567).

The spelling of 30172464 in words is "thirty million, one hundred seventy-two thousand, four hundred sixty-four".