40213670 has 64 divisors (see below), whose sum is σ = 89579520. Its totient is φ = 12682752.

The previous prime is 40213651. The next prime is 40213681. The reversal of 40213670 is 7631204.

40213670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 55571 + ... + 56289.

It is an arithmetic number, because the mean of its divisors is an integer number (1399680).

Almost surely, 2^40213670 is an apocalyptic number.

40213670 is an abundant number, since it is smaller than the sum of its proper divisors (49365850).

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

40213670 is a wasteful number, since it uses less digits than its factorization.

40213670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 40213670 is about 6341.4249187387. The cubic root of 40213670 is about 342.6030591880.

Adding to 40213670 its reverse (7631204), we get a palindrome (47844874).

The spelling of 40213670 in words is "forty million, two hundred thirteen thousand, six hundred seventy".