40622731 has 4 divisors (see below), whose sum is σ = 40638600. Its totient is φ = 40606864.

The previous prime is 40622713. The next prime is 40622749. The reversal of 40622731 is 13722604.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40622713) and next prime (40622749).

It is a cyclic number.

It is not a de Polignac number, because 40622731 - 2¹¹ = 40620683 is a prime.

It is a super-2 number, since 2×40622731² = 3300412547796722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40622696 and 40622705.

It is not an unprimeable number, because it can be changed into a prime (40623731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3121 + ... + 9538.

It is an arithmetic number, because the mean of its divisors is an integer number (10159650).

Almost surely, 2^40622731 is an apocalyptic number.

40622731 is a deficient number, since it is larger than the sum of its proper divisors (15869).

40622731 is a wasteful number, since it uses less digits than its factorization.

40622731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15868.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 40622731 is about 6373.5963945013. The cubic root of 40622731 is about 343.7608165853.

The spelling of 40622731 in words is "forty million, six hundred twenty-two thousand, seven hundred thirty-one".