40003038 has 32 divisors (see below), whose sum is σ = 89145120. Its totient is φ = 13296960.

The previous prime is 40003027. The next prime is 40003039. The reversal of 40003038 is 83030004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40003038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40003039) 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, 23868 + ... + 25488.

It is an arithmetic number, because the mean of its divisors is an integer number (2785785).

Almost surely, 2^40003038 is an apocalyptic number.

40003038 is an abundant number, since it is smaller than the sum of its proper divisors (49142082).

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

40003038 is a wasteful number, since it uses less digits than its factorization.

40003038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2083 counting only the distinct ones).

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

The square root of 40003038 is about 6324.7954907649. The cubic root of 40003038 is about 342.0038472944.

The spelling of 40003038 in words is "forty million, three thousand, thirty-eight".