165047400 has 144 divisors (see below), whose sum is σ = 633516000. Its totient is φ = 37722240.

The previous prime is 165047383. The next prime is 165047413. The reversal of 165047400 is 4740561.

165047400 is a `hidden beast` number, since 1 + 650 + 4 + 7 + 4 + 0 + 0 = 666.

165047400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6051 + ... + 19149.

Almost surely, 2^165047400 is an apocalyptic number.

165047400 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 165047400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316758000).

165047400 is an abundant number, since it is smaller than the sum of its proper divisors (468468600).

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

165047400 is a wasteful number, since it uses less digits than its factorization.

165047400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13128 (or 13116 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 165047400 is about 12847.0774886742. The cubic root of 165047400 is about 548.5331713927.

Adding to 165047400 its reverse (4740561), we get a palindrome (169787961).

The spelling of 165047400 in words is "one hundred sixty-five million, forty-seven thousand, four hundred".