161402912 has 24 divisors (see below), whose sum is σ = 346650192. Its totient is φ = 73364800.

The previous prime is 161402911. The next prime is 161402921. The reversal of 161402912 is 219204161.

It is not an unprimeable number, because it can be changed into a prime (161402911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228914 + ... + 229617.

It is an arithmetic number, because the mean of its divisors is an integer number (14443758).

Almost surely, 2^161402912 is an apocalyptic number.

It is an amenable number.

161402912 is an abundant number, since it is smaller than the sum of its proper divisors (185247280).

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

161402912 is a wasteful number, since it uses less digits than its factorization.

161402912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458552 (or 458544 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 161402912 is about 12704.4445766039. Note that the first 3 decimals coincide. The cubic root of 161402912 is about 544.4656120358.

The spelling of 161402912 in words is "one hundred sixty-one million, four hundred two thousand, nine hundred twelve".