7422731 has 8 divisors (see below), whose sum is σ = 7632240. Its totient is φ = 7216128.

The previous prime is 7422719. The next prime is 7422743. The reversal of 7422731 is 1372247.

It is an interprime number because it is at equal distance from previous prime (7422719) and next prime (7422743).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7422731 - 2²² = 3228427 is a prime.

It is a super-2 number, since 2×7422731² = 110193870996722, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 7422731.

It is not an unprimeable number, because it can be changed into a prime (7422781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5075 + ... + 6371.

It is an arithmetic number, because the mean of its divisors is an integer number (954030).

Almost surely, 2^7422731 is an apocalyptic number.

7422731 is a deficient number, since it is larger than the sum of its proper divisors (209509).

7422731 is a wasteful number, since it uses less digits than its factorization.

7422731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453.

The product of its digits is 2352, while the sum is 26.

The square root of 7422731 is about 2724.4689390779. The cubic root of 7422731 is about 195.0688426665.

Adding to 7422731 its reverse (1372247), we get a palindrome (8794978).

The spelling of 7422731 in words is "seven million, four hundred twenty-two thousand, seven hundred thirty-one".