40236556 has 12 divisors (see below), whose sum is σ = 70887600. Its totient is φ = 19982960.

The previous prime is 40236551. The next prime is 40236583. The reversal of 40236556 is 65563204.

40236556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40236556² = 3237960877482272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40236551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33160 + ... + 34351.

It is an arithmetic number, because the mean of its divisors is an integer number (5907300).

Almost surely, 2^40236556 is an apocalyptic number.

It is an amenable number.

40236556 is a deficient number, since it is larger than the sum of its proper divisors (30651044).

40236556 is a wasteful number, since it uses less digits than its factorization.

40236556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67664 (or 67662 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 40236556 is about 6343.2291461053. The cubic root of 40236556 is about 342.6680398000.

The spelling of 40236556 in words is "forty million, two hundred thirty-six thousand, five hundred fifty-six".