165782040 has 32 divisors (see below), whose sum is σ = 497346480. Its totient is φ = 44208512.

The previous prime is 165782033. The next prime is 165782041. The reversal of 165782040 is 40287561.

It is a junction number, because it is equal to n+sod(n) for n = 165781992 and 165782010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165782041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 690639 + ... + 690878.

Almost surely, 2^165782040 is an apocalyptic number.

165782040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165782040 is an abundant number, since it is smaller than the sum of its proper divisors (331564440).

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

165782040 is a wasteful number, since it uses less digits than its factorization.

165782040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381531 (or 1381527 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 165782040 is about 12875.6374599474. The cubic root of 165782040 is about 549.3458227725.

The spelling of 165782040 in words is "one hundred sixty-five million, seven hundred eighty-two thousand, forty".