40530238 has 16 divisors (see below), whose sum is σ = 69610464. Its totient is φ = 17337600.

The previous prime is 40530223. The next prime is 40530247. The reversal of 40530238 is 83203504.

It is a congruent number.

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, 6006 + ... + 10822.

It is an arithmetic number, because the mean of its divisors is an integer number (4350654).

Almost surely, 2^40530238 is an apocalyptic number.

40530238 is a deficient number, since it is larger than the sum of its proper divisors (29080226).

40530238 is a wasteful number, since it uses less digits than its factorization.

40530238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5427.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40530238 is about 6366.3363090556. The cubic root of 40530238 is about 343.4997178485.

The spelling of 40530238 in words is "forty million, five hundred thirty thousand, two hundred thirty-eight".