165208340 has 48 divisors (see below), whose sum is σ = 379983744. Its totient is φ = 59836800.

The previous prime is 165208339. The next prime is 165208387. The reversal of 165208340 is 43802561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59585 + ... + 62295.

It is an arithmetic number, because the mean of its divisors is an integer number (7916328).

Almost surely, 2^165208340 is an apocalyptic number.

165208340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165208340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189991872).

165208340 is an abundant number, since it is smaller than the sum of its proper divisors (214775404).

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

165208340 is a wasteful number, since it uses less digits than its factorization.

165208340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008 (or 3006 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 165208340 is about 12853.3396438435. The cubic root of 165208340 is about 548.7114075630.

The spelling of 165208340 in words is "one hundred sixty-five million, two hundred eight thousand, three hundred forty".