40163004 has 72 divisors (see below), whose sum is σ = 118530048. Its totient is φ = 11227680.

The previous prime is 40163003. The next prime is 40163023. The reversal of 40163004 is 40036104.

It is a super-2 number, since 2×40163004² = 3226133780608032, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40163003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10149 + ... + 13539.

Almost surely, 2^40163004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40163004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59265024).

40163004 is an abundant number, since it is smaller than the sum of its proper divisors (78367044).

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

40163004 is a wasteful number, since it uses less digits than its factorization.

40163004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40163004 is about 6337.4288161683. The cubic root of 40163004 is about 342.4591145896.

Adding to 40163004 its reverse (40036104), we get a palindrome (80199108).

The spelling of 40163004 in words is "forty million, one hundred sixty-three thousand, four".