40621718 has 16 divisors (see below), whose sum is σ = 63329280. Its totient is φ = 19521000.

The previous prime is 40621717. The next prime is 40621729. The reversal of 40621718 is 81712604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40621717) 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, 7193 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (3958080).

Almost surely, 2^40621718 is an apocalyptic number.

40621718 is a deficient number, since it is larger than the sum of its proper divisors (22707562).

40621718 is a wasteful number, since it uses less digits than its factorization.

40621718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 40621718 is about 6373.5169255286. The cubic root of 40621718 is about 343.7579591325.

The spelling of 40621718 in words is "forty million, six hundred twenty-one thousand, seven hundred eighteen".