40206580 has 12 divisors (see below), whose sum is σ = 84433860. Its totient is φ = 16082624.

The previous prime is 40206577. The next prime is 40206583. The reversal of 40206580 is 8560204.

It is an interprime number because it is at equal distance from previous prime (40206577) and next prime (40206583).

It can be written as a sum of positive squares in 2 ways, for example, as 5207524 + 34999056 = 2282^2 + 5916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40206583) 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 3 ways as a sum of consecutive naturals, for example, 1005145 + ... + 1005184.

It is an arithmetic number, because the mean of its divisors is an integer number (7036155).

Almost surely, 2^40206580 is an apocalyptic number.

It is an amenable number.

40206580 is an abundant number, since it is smaller than the sum of its proper divisors (44227280).

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

40206580 is a wasteful number, since it uses less digits than its factorization.

40206580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010338 (or 2010336 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40206580 is about 6340.8658714721. The cubic root of 40206580 is about 342.5829234277.

Adding to 40206580 its reverse (8560204), we get a palindrome (48766784).

The spelling of 40206580 in words is "forty million, two hundred six thousand, five hundred eighty".