161467904 has 80 divisors (see below), whose sum is σ = 368132688. Its totient is φ = 70090752.

The previous prime is 161467877. The next prime is 161467907. The reversal of 161467904 is 409764161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161467907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112439 + ... + 113865.

Almost surely, 2^161467904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161467904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184066344).

161467904 is an abundant number, since it is smaller than the sum of its proper divisors (206664784).

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

161467904 is a wasteful number, since it uses less digits than its factorization.

161467904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 161467904 is about 12707.0021641613. The cubic root of 161467904 is about 544.5386820940.

The spelling of 161467904 in words is "one hundred sixty-one million, four hundred sixty-seven thousand, nine hundred four".