7172424 has 144 divisors (see below), whose sum is σ = 24008400. Its totient is φ = 1923264.

The previous prime is 7172423. The next prime is 7172447. The reversal of 7172424 is 4242717.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (7172423) 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 35 ways as a sum of consecutive naturals, for example, 66979 + ... + 67085.

It is an arithmetic number, because the mean of its divisors is an integer number (166725).

Almost surely, 2^7172424 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 7172424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12004200).

7172424 is an abundant number, since it is smaller than the sum of its proper divisors (16835976).

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

7172424 is a wasteful number, since it uses less digits than its factorization.

7172424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 138 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 7172424 is about 2678.1381592442. The cubic root of 7172424 is about 192.8510399009.

The spelling of 7172424 in words is "seven million, one hundred seventy-two thousand, four hundred twenty-four".