7378731 has 24 divisors (see below), whose sum is σ = 11681280. Its totient is φ = 4467456.

The previous prime is 7378711. The next prime is 7378739. The reversal of 7378731 is 1378737.

It is a happy number.

7378731 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7378731 - 2⁷ = 7378603 is a prime.

It is a super-2 number, since 2×7378731² = 108891342340722, which contains 22 as substring.

7378731 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7378739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3606 + ... + 5268.

It is an arithmetic number, because the mean of its divisors is an integer number (486720).

Almost surely, 2^7378731 is an apocalyptic number.

7378731 is a deficient number, since it is larger than the sum of its proper divisors (4302549).

7378731 is a wasteful number, since it uses less digits than its factorization.

7378731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1712 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 7378731 is about 2716.3819687224. The cubic root of 7378731 is about 194.6826395981.

The spelling of 7378731 in words is "seven million, three hundred seventy-eight thousand, seven hundred thirty-one".