40040030 has 32 divisors (see below), whose sum is σ = 76809600. Its totient is φ = 14984352.

The previous prime is 40040029. The next prime is 40040041. The reversal of 40040030 is 3004004.

It is a junction number, because it is equal to n+sod(n) for n = 40039993 and 40040020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14501 + ... + 17039.

It is an arithmetic number, because the mean of its divisors is an integer number (2400300).

Almost surely, 2^40040030 is an apocalyptic number.

40040030 is a deficient number, since it is larger than the sum of its proper divisors (36769570).

40040030 is a wasteful number, since it uses less digits than its factorization.

40040030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648.

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

The square root of 40040030 is about 6327.7191783454. The cubic root of 40040030 is about 342.1092351952.

Adding to 40040030 its reverse (3004004), we get a palindrome (43044034).

The spelling of 40040030 in words is "forty million, forty thousand, thirty", and thus it is an eban number.