40576638 has 8 divisors (see below), whose sum is σ = 81153288. Its totient is φ = 13525544.

The previous prime is 40576619. The next prime is 40576639. The reversal of 40576638 is 83667504.

It is a sphenic number, since it is the product of 3 distinct primes.

40576638 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40576596 and 40576605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40576639) 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, 3381381 + ... + 3381392.

It is an arithmetic number, because the mean of its divisors is an integer number (10144161).

Almost surely, 2^40576638 is an apocalyptic number.

40576638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40576638 is a wasteful number, since it uses less digits than its factorization.

40576638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6762778.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 40576638 is about 6369.9794348177. The cubic root of 40576638 is about 343.6307501291.

It can be divided in two parts, 40576 and 638, that added together give a palindrome (41214).

The spelling of 40576638 in words is "forty million, five hundred seventy-six thousand, six hundred thirty-eight".