165471400 has 96 divisors (see below), whose sum is σ = 402876000. Its totient is φ = 63141120.

The previous prime is 165471391. The next prime is 165471401. The reversal of 165471400 is 4174561.

165471400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165471401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436411 + ... + 436789.

It is an arithmetic number, because the mean of its divisors is an integer number (4196625).

Almost surely, 2^165471400 is an apocalyptic number.

165471400 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 165471400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201438000).

165471400 is an abundant number, since it is smaller than the sum of its proper divisors (237404600).

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

165471400 is a wasteful number, since it uses less digits than its factorization.

165471400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 165471400 is about 12863.5687116756. The cubic root of 165471400 is about 549.0024894739.

The spelling of 165471400 in words is "one hundred sixty-five million, four hundred seventy-one thousand, four hundred".