40994720 has 48 divisors (see below), whose sum is σ = 104305320. Its totient is φ = 15135744.

The previous prime is 40994713. The next prime is 40994729. The reversal of 40994720 is 2749904.

40994720 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 4 ways, for example, as 25847056 + 15147664 = 5084^2 + 3892^2 .

It is not an unprimeable number, because it can be changed into a prime (40994729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7775 + ... + 11934.

Almost surely, 2^40994720 is an apocalyptic number.

40994720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40994720 is an abundant number, since it is smaller than the sum of its proper divisors (63310600).

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

40994720 is a wasteful number, since it uses less digits than its factorization.

40994720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19737 (or 19729 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 40994720 is about 6402.7119254266. The cubic root of 40994720 is about 344.8069212995.

It can be divided in two parts, 40994 and 720, that added together give a palindrome (41714).

The spelling of 40994720 in words is "forty million, nine hundred ninety-four thousand, seven hundred twenty".