7381740 has 48 divisors (see below), whose sum is σ = 21887712. Its totient is φ = 1852416.

The previous prime is 7381739. The next prime is 7381741. The reversal of 7381740 is 471837.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7381739) and next prime (7381741).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7381698 and 7381707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7381741) 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, 2599 + ... + 4638.

It is an arithmetic number, because the mean of its divisors is an integer number (455994).

Almost surely, 2^7381740 is an apocalyptic number.

It is an amenable number.

7381740 is an abundant number, since it is smaller than the sum of its proper divisors (14505972).

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

7381740 is a wasteful number, since it uses less digits than its factorization.

7381740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266 (or 7264 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 7381740 is about 2716.9357739925. The cubic root of 7381740 is about 194.7090994529.

Subtracting from 7381740 its reverse (471837), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 7381740 in words is "seven million, three hundred eighty-one thousand, seven hundred forty".