40733581 has 8 divisors (see below), whose sum is σ = 49291200. Its totient is φ = 32860608.

The previous prime is 40733569. The next prime is 40733591. The reversal of 40733581 is 18533704.

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

It is a cyclic number.

It is not a de Polignac number, because 40733581 - 2⁷ = 40733453 is a prime.

It is a super-2 number, since 2×40733581² = 3318449242167122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40733531) 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, 171031 + ... + 171268.

It is an arithmetic number, because the mean of its divisors is an integer number (6161400).

Almost surely, 2^40733581 is an apocalyptic number.

It is an amenable number.

40733581 is a deficient number, since it is larger than the sum of its proper divisors (8557619).

40733581 is a wasteful number, since it uses less digits than its factorization.

40733581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342323.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 40733581 is about 6382.2865025005. The cubic root of 40733581 is about 344.0732137524.

It can be divided in two parts, 40733 and 581, that added together give a palindrome (41314).

The spelling of 40733581 in words is "forty million, seven hundred thirty-three thousand, five hundred eighty-one".