40605556 has 24 divisors (see below), whose sum is σ = 72930816. Its totient is φ = 19772640.

The previous prime is 40605541. The next prime is 40605559. The reversal of 40605556 is 65550604.

It is a super-2 number, since 2×40605556² = 3297622356138272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40605559) 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, 50550 + ... + 51346.

It is an arithmetic number, because the mean of its divisors is an integer number (3038784).

Almost surely, 2^40605556 is an apocalyptic number.

It is an amenable number.

40605556 is a deficient number, since it is larger than the sum of its proper divisors (32325260).

40605556 is a wasteful number, since it uses less digits than its factorization.

40605556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 40605556 is about 6372.2488965827. The cubic root of 40605556 is about 343.7123632182.

The spelling of 40605556 in words is "forty million, six hundred five thousand, five hundred fifty-six".