40041810 has 32 divisors (see below), whose sum is σ = 106778880. Its totient is φ = 10677744.

The previous prime is 40041809. The next prime is 40041811. The reversal of 40041810 is 1814004.

It is an interprime number because it is at equal distance from previous prime (40041809) and next prime (40041811).

It is a super-2 number, since 2×40041810² = 3206693096152200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40041811) 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, 73882 + ... + 74421.

It is an arithmetic number, because the mean of its divisors is an integer number (3336840).

Almost surely, 2^40041810 is an apocalyptic number.

40041810 is an abundant number, since it is smaller than the sum of its proper divisors (66737070).

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

40041810 is a wasteful number, since it uses less digits than its factorization.

40041810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148319 (or 148313 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 40041810 is about 6327.8598277775. The cubic root of 40041810 is about 342.1143046671.

Adding to 40041810 its reverse (1814004), we get a palindrome (41855814).

The spelling of 40041810 in words is "forty million, forty-one thousand, eight hundred ten".