40138852 has 18 divisors (see below), whose sum is σ = 76063218. Its totient is φ = 18525312.

The previous prime is 40138837. The next prime is 40138867. The reversal of 40138852 is 25883104.

It is an interprime number because it is at equal distance from previous prime (40138837) and next prime (40138867).

It can be written as a sum of positive squares in 3 ways, for example, as 2390116 + 37748736 = 1546^2 + 6144^2 .

It is a super-2 number, since 2×40138852² = 3222254879755808, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29013 + ... + 30364.

Almost surely, 2^40138852 is an apocalyptic number.

It is an amenable number.

40138852 is a deficient number, since it is larger than the sum of its proper divisors (35924366).

40138852 is a wasteful number, since it uses less digits than its factorization.

40138852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59407 (or 59392 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 40138852 is about 6335.5230249759. The cubic root of 40138852 is about 342.3904549593.

The spelling of 40138852 in words is "forty million, one hundred thirty-eight thousand, eight hundred fifty-two".