7938424 has 32 divisors (see below), whose sum is σ = 16470720. Its totient is φ = 3563136.

The previous prime is 7938407. The next prime is 7938443. The reversal of 7938424 is 4248397.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2817 + ... + 4879.

It is an arithmetic number, because the mean of its divisors is an integer number (514710).

Almost surely, 2^7938424 is an apocalyptic number.

7938424 is a gapful number since it is divisible by the number (74) 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 7938424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8235360).

7938424 is an abundant number, since it is smaller than the sum of its proper divisors (8532296).

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

7938424 is a wasteful number, since it uses less digits than its factorization.

7938424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2115 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 7938424 is about 2817.5208961071. The cubic root of 7938424 is about 199.4855444789.

It can be divided in two parts, 79 and 38424, that added together give a triangular number (38503 = T₂₇₇).

The spelling of 7938424 in words is "seven million, nine hundred thirty-eight thousand, four hundred twenty-four".