40347238 has 8 divisors (see below), whose sum is σ = 60552288. Its totient is φ = 20163144.

The previous prime is 40347217. The next prime is 40347259. The reversal of 40347238 is 83274304.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40347217) and next prime (40347259).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40347238² = 3255799228457288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120 + ... + 9052.

It is an arithmetic number, because the mean of its divisors is an integer number (7569036).

Almost surely, 2^40347238 is an apocalyptic number.

40347238 is a deficient number, since it is larger than the sum of its proper divisors (20205050).

40347238 is a wasteful number, since it uses less digits than its factorization.

40347238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10478.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 40347238 is about 6351.9475753504. The cubic root of 40347238 is about 342.9819538483.

The spelling of 40347238 in words is "forty million, three hundred forty-seven thousand, two hundred thirty-eight".