165035440 has 20 divisors (see below), whose sum is σ = 383707584. Its totient is φ = 66014144.

The previous prime is 165035401. The next prime is 165035489. The reversal of 165035440 is 44530561.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 165035399 and 165035408.

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, 1031392 + ... + 1031551.

Almost surely, 2^165035440 is an apocalyptic number.

165035440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165035440 is an abundant number, since it is smaller than the sum of its proper divisors (218672144).

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

165035440 is a wasteful number, since it uses less digits than its factorization.

165035440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062956 (or 2062950 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 165035440 is about 12846.6120047272. The cubic root of 165035440 is about 548.5199214309.

The spelling of 165035440 in words is "one hundred sixty-five million, thirty-five thousand, four hundred forty".