40016004 has 24 divisors (see below), whose sum is σ = 106709568. Its totient is φ = 11433120.

The previous prime is 40015999. The next prime is 40016051. The reversal of 40016004 is 40061004.

It is a super-2 number, since 2×40016004² = 3202561152256032, which contains 22 as substring.

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, 238107 + ... + 238274.

It is an arithmetic number, because the mean of its divisors is an integer number (4446232).

Almost surely, 2^40016004 is an apocalyptic number.

It is an amenable number.

40016004 is an abundant number, since it is smaller than the sum of its proper divisors (66693564).

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

40016004 is a wasteful number, since it uses less digits than its factorization.

40016004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476395 (or 476393 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40016004 is about 6325.8204210995. The cubic root of 40016004 is about 342.0407940122.

Adding to 40016004 its reverse (40061004), we get a palindrome (80077008).

The spelling of 40016004 in words is "forty million, sixteen thousand, four".