40238814 has 64 divisors (see below), whose sum is σ = 101025792. Its totient is φ = 10380000.

The previous prime is 40238777. The next prime is 40238839. The reversal of 40238814 is 41883204.

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, 115789 + ... + 116135.

It is an arithmetic number, because the mean of its divisors is an integer number (1578528).

Almost surely, 2^40238814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40238814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50512896).

40238814 is an abundant number, since it is smaller than the sum of its proper divisors (60786978).

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

40238814 is a wasteful number, since it uses less digits than its factorization.

40238814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 40238814 is about 6343.4071286652. The cubic root of 40238814 is about 342.6744496425.

The spelling of 40238814 in words is "forty million, two hundred thirty-eight thousand, eight hundred fourteen".