40018210 has 32 divisors (see below), whose sum is σ = 74898432. Its totient is φ = 15378240.

The previous prime is 40018193. The next prime is 40018211. The reversal of 40018210 is 1281004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40018211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51384 + ... + 52156.

It is an arithmetic number, because the mean of its divisors is an integer number (2340576).

Almost surely, 2^40018210 is an apocalyptic number.

40018210 is a deficient number, since it is larger than the sum of its proper divisors (34880222).

40018210 is a wasteful number, since it uses less digits than its factorization.

40018210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 40018210 is about 6325.9947834313. The cubic root of 40018210 is about 342.0470792318.

Adding to 40018210 its reverse (1281004), we get a palindrome (41299214).

The spelling of 40018210 in words is "forty million, eighteen thousand, two hundred ten".