7388421 has 16 divisors (see below), whose sum is σ = 10488384. Its totient is φ = 4610304.

The previous prime is 7388377. The next prime is 7388429. The reversal of 7388421 is 1248837.

It is not a de Polignac number, because 7388421 - 2⁶ = 7388357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7388429) 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, 13866 + ... + 14388.

It is an arithmetic number, because the mean of its divisors is an integer number (655524).

Almost surely, 2^7388421 is an apocalyptic number.

It is an amenable number.

7388421 is a deficient number, since it is larger than the sum of its proper divisors (3099963).

7388421 is a wasteful number, since it uses less digits than its factorization.

7388421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its digits is 10752, while the sum is 33.

The square root of 7388421 is about 2718.1650060289. The cubic root of 7388421 is about 194.7678236036.

The spelling of 7388421 in words is "seven million, three hundred eighty-eight thousand, four hundred twenty-one".