40138782 has 8 divisors (see below), whose sum is σ = 80277576. Its totient is φ = 13379592.

The previous prime is 40138771. The next prime is 40138801. The reversal of 40138782 is 28783104.

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

40138782 is an admirable number.

It is a super-2 number, since 2×40138782² = 3222243640887048, 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, 3344893 + ... + 3344904.

It is an arithmetic number, because the mean of its divisors is an integer number (10034697).

Almost surely, 2^40138782 is an apocalyptic number.

40138782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40138782 is a wasteful number, since it uses less digits than its factorization.

40138782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689802.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 40138782 is about 6335.5175005677. The cubic root of 40138782 is about 342.3902559223.

The spelling of 40138782 in words is "forty million, one hundred thirty-eight thousand, seven hundred eighty-two".