40004030 has 32 divisors (see below), whose sum is σ = 80684640. Its totient is φ = 14152320.

The previous prime is 40004023. The next prime is 40004039. The reversal of 40004030 is 3040004.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004039) 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, 845 + ... + 8984.

It is an arithmetic number, because the mean of its divisors is an integer number (2521395).

Almost surely, 2^40004030 is an apocalyptic number.

40004030 is an abundant number, since it is smaller than the sum of its proper divisors (40680610).

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

40004030 is a wasteful number, since it uses less digits than its factorization.

40004030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9884.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 40004030 is about 6324.8739117867. The cubic root of 40004030 is about 342.0066742881.

Adding to 40004030 its reverse (3040004), we get a palindrome (43044034).

The spelling of 40004030 in words is "forty million, four thousand, thirty", and thus it is an eban number.