7428384 has 36 divisors (see below), whose sum is σ = 21125286. Its totient is φ = 2476032.

The previous prime is 7428383. The next prime is 7428389. The reversal of 7428384 is 4838247.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 138384 = 2700^2 + 372^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12609 + ... + 13184.

Almost surely, 2^7428384 is an apocalyptic number.

It is an amenable number.

7428384 is an abundant number, since it is smaller than the sum of its proper divisors (13696902).

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

7428384 is a wasteful number, since it uses less digits than its factorization.

7428384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25809 (or 25798 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 7428384 is about 2725.5061915175. The cubic root of 7428384 is about 195.1183502466.

The spelling of 7428384 in words is "seven million, four hundred twenty-eight thousand, three hundred eighty-four".