40181010 has 64 divisors (see below), whose sum is σ = 102384000. Its totient is φ = 10063872.

The previous prime is 40181003. The next prime is 40181017. The reversal of 40181010 is 1018104.

It is an interprime number because it is at equal distance from previous prime (40181003) and next prime (40181017).

It is a super-2 number, since 2×40181010² = 3229027129240200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (40181017) 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 31 ways as a sum of consecutive naturals, for example, 89266 + ... + 89714.

It is an arithmetic number, because the mean of its divisors is an integer number (1599750).

Almost surely, 2^40181010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40181010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51192000).

40181010 is an abundant number, since it is smaller than the sum of its proper divisors (62202990).

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

40181010 is a wasteful number, since it uses less digits than its factorization.

40181010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 40181010 is about 6338.8492646536. The cubic root of 40181010 is about 342.5102843805.

Adding to 40181010 its reverse (1018104), we get a palindrome (41199114).

The spelling of 40181010 in words is "forty million, one hundred eighty-one thousand, ten".