40620340 has 24 divisors (see below), whose sum is σ = 87385032. Its totient is φ = 15851520.

The previous prime is 40620331. The next prime is 40620343. The reversal of 40620340 is 4302604.

40620340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17956 + 40602384 = 134^2 + 6372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40620343) 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 7 ways as a sum of consecutive naturals, for example, 23949 + ... + 25588.

It is an arithmetic number, because the mean of its divisors is an integer number (3641043).

Almost surely, 2^40620340 is an apocalyptic number.

It is an amenable number.

40620340 is an abundant number, since it is smaller than the sum of its proper divisors (46764692).

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

40620340 is a wasteful number, since it uses less digits than its factorization.

40620340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49587 (or 49585 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40620340 is about 6373.4088210313. The cubic root of 40620340 is about 343.7540720179.

Adding to 40620340 its reverse (4302604), we get a palindrome (44922944).

The spelling of 40620340 in words is "forty million, six hundred twenty thousand, three hundred forty".