40638622 has 4 divisors (see below), whose sum is σ = 60957936. Its totient is φ = 20319310.

The previous prime is 40638601. The next prime is 40638629. The reversal of 40638622 is 22683604.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40638629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10159654 + ... + 10159657.

It is an arithmetic number, because the mean of its divisors is an integer number (15239484).

Almost surely, 2^40638622 is an apocalyptic number.

40638622 is a deficient number, since it is larger than the sum of its proper divisors (20319314).

40638622 is a wasteful number, since it uses less digits than its factorization.

40638622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20319313.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 40638622 is about 6374.8429000251. The cubic root of 40638622 is about 343.8056354248.

The spelling of 40638622 in words is "forty million, six hundred thirty-eight thousand, six hundred twenty-two".