40088238 has 16 divisors (see below), whose sum is σ = 80913360. Its totient is φ = 13239936.

The previous prime is 40088221. The next prime is 40088267. The reversal of 40088238 is 83288004.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40088199 and 40088208.

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, 29995 + ... + 31302.

It is an arithmetic number, because the mean of its divisors is an integer number (5057085).

Almost surely, 2^40088238 is an apocalyptic number.

40088238 is an abundant number, since it is smaller than the sum of its proper divisors (40825122).

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

40088238 is a wasteful number, since it uses less digits than its factorization.

40088238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61411.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 40088238 is about 6331.5273038975. The cubic root of 40088238 is about 342.2464794107.

It can be divided in two parts, 4008 and 8238, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 40088238 in words is "forty million, eighty-eight thousand, two hundred thirty-eight".