40356520 has 16 divisors (see below), whose sum is σ = 90802260. Its totient is φ = 16142592.

The previous prime is 40356461. The next prime is 40356523. The reversal of 40356520 is 2565304.

40356520 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 2 ways, for example, as 39513796 + 842724 = 6286^2 + 918^2 .

It is not an unprimeable number, because it can be changed into a prime (40356523) 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 3 ways as a sum of consecutive naturals, for example, 504417 + ... + 504496.

Almost surely, 2^40356520 is an apocalyptic number.

40356520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40356520 is an abundant number, since it is smaller than the sum of its proper divisors (50445740).

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

40356520 is a wasteful number, since it uses less digits than its factorization.

40356520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008924 (or 1008920 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40356520 is about 6352.6781753840. The cubic root of 40356520 is about 343.0082531652.

The spelling of 40356520 in words is "forty million, three hundred fifty-six thousand, five hundred twenty".