40413040 has 40 divisors (see below), whose sum is σ = 94302000. Its totient is φ = 16106496.

The previous prime is 40413017. The next prime is 40413059. The reversal of 40413040 is 4031404.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26211 + ... + 27709.

It is an arithmetic number, because the mean of its divisors is an integer number (2357550).

Almost surely, 2^40413040 is an apocalyptic number.

40413040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40413040 is an abundant number, since it is smaller than the sum of its proper divisors (53888960).

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

40413040 is a wasteful number, since it uses less digits than its factorization.

40413040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40413040 is about 6357.1251364119. The cubic root of 40413040 is about 343.1683081202.

Adding to 40413040 its reverse (4031404), we get a palindrome (44444444).

The spelling of 40413040 in words is "forty million, four hundred thirteen thousand, forty".