40313620 has 24 divisors (see below), whose sum is σ = 85282344. Its totient is φ = 16006656.

The previous prime is 40313617. The next prime is 40313627. The reversal of 40313620 is 2631304.

It can be written as a sum of positive squares in 4 ways, for example, as 8976016 + 31337604 = 2996^2 + 5598^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40313627) 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, 4617 + ... + 10096.

It is an arithmetic number, because the mean of its divisors is an integer number (3553431).

Almost surely, 2^40313620 is an apocalyptic number.

It is an amenable number.

40313620 is an abundant number, since it is smaller than the sum of its proper divisors (44968724).

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

40313620 is a wasteful number, since it uses less digits than its factorization.

40313620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14859 (or 14857 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 40313620 is about 6349.3007489014. The cubic root of 40313620 is about 342.8866679270.

Adding to 40313620 its reverse (2631304), we get a palindrome (42944924).

The spelling of 40313620 in words is "forty million, three hundred thirteen thousand, six hundred twenty".