7481406 has 16 divisors (see below), whose sum is σ = 15208848. Its totient is φ = 2452800.

The previous prime is 7481401. The next prime is 7481407. The reversal of 7481406 is 6041847.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7481401) 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 7 ways as a sum of consecutive naturals, for example, 9855 + ... + 10586.

It is an arithmetic number, because the mean of its divisors is an integer number (950553).

Almost surely, 2^7481406 is an apocalyptic number.

7481406 is an abundant number, since it is smaller than the sum of its proper divisors (7727442).

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

7481406 is a wasteful number, since it uses less digits than its factorization.

7481406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20507.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 7481406 is about 2735.2158964148. The cubic root of 7481406 is about 195.5814858627.

It can be divided in two parts, 7481 and 406, that added together give a palindrome (7887).

The spelling of 7481406 in words is "seven million, four hundred eighty-one thousand, four hundred six".