40355238 has 64 divisors (see below), whose sum is σ = 101647872. Its totient is φ = 10375680.

The previous prime is 40355177. The next prime is 40355261. The reversal of 40355238 is 83255304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51820 + ... + 52592.

It is an arithmetic number, because the mean of its divisors is an integer number (1588248).

Almost surely, 2^40355238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40355238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50823936).

40355238 is an abundant number, since it is smaller than the sum of its proper divisors (61292634).

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

40355238 is a wasteful number, since it uses less digits than its factorization.

40355238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 40355238 is about 6352.5772722573. The cubic root of 40355238 is about 343.0046210282.

The spelling of 40355238 in words is "forty million, three hundred fifty-five thousand, two hundred thirty-eight".