7481394 has 48 divisors (see below), whose sum is σ = 17926272. Its totient is φ = 2242944.

The previous prime is 7481389. The next prime is 7481401. The reversal of 7481394 is 4931847.

It is a happy number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6507 + ... + 7569.

It is an arithmetic number, because the mean of its divisors is an integer number (373464).

Almost surely, 2^7481394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7481394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8963136).

7481394 is an abundant number, since it is smaller than the sum of its proper divisors (10444878).

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

7481394 is a wasteful number, since it uses less digits than its factorization.

7481394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1108 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7481394 is about 2735.2137028028. The cubic root of 7481394 is about 195.5813812933.

It can be divided in two parts, 7481 and 394, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 7481394 in words is "seven million, four hundred eighty-one thousand, three hundred ninety-four".