40537780 has 12 divisors (see below), whose sum is σ = 85129380. Its totient is φ = 16215104.

The previous prime is 40537771. The next prime is 40537787. The reversal of 40537780 is 8773504.

40537780 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 18766224 + 21771556 = 4332^2 + 4666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40537787) 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, 1013425 + ... + 1013464.

It is an arithmetic number, because the mean of its divisors is an integer number (7094115).

Almost surely, 2^40537780 is an apocalyptic number.

It is an amenable number.

40537780 is an abundant number, since it is smaller than the sum of its proper divisors (44591600).

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

40537780 is a wasteful number, since it uses less digits than its factorization.

40537780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026898 (or 2026896 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 40537780 is about 6366.9286159026. The cubic root of 40537780 is about 343.5210230461.

The spelling of 40537780 in words is "forty million, five hundred thirty-seven thousand, seven hundred eighty".