161679428 has 12 divisors (see below), whose sum is σ = 283115280. Its totient is φ = 80789352.

The previous prime is 161679421. The next prime is 161679431. The reversal of 161679428 is 824976161.

161679428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161679428² = 52280474876814368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161679421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4838 + ... + 18621.

It is an arithmetic number, because the mean of its divisors is an integer number (23592940).

Almost surely, 2^161679428 is an apocalyptic number.

It is an amenable number.

161679428 is a deficient number, since it is larger than the sum of its proper divisors (121435852).

161679428 is a wasteful number, since it uses less digits than its factorization.

161679428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25186 (or 25184 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 161679428 is about 12715.3225676740. The cubic root of 161679428 is about 544.7763614038.

The spelling of 161679428 in words is "one hundred sixty-one million, six hundred seventy-nine thousand, four hundred twenty-eight".