161428810 has 16 divisors (see below), whose sum is σ = 293394816. Its totient is φ = 63944208.

The previous prime is 161428801. The next prime is 161428829. The reversal of 161428810 is 18824161.

It is a super-2 number, since 2×161428810² = 52118521396032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77334 + ... + 79393.

It is an arithmetic number, because the mean of its divisors is an integer number (18337176).

Almost surely, 2^161428810 is an apocalyptic number.

161428810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161428810 is a deficient number, since it is larger than the sum of its proper divisors (131966006).

161428810 is a wasteful number, since it uses less digits than its factorization.

161428810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156837.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 161428810 is about 12705.4637853169. The cubic root of 161428810 is about 544.4947313294.

The spelling of 161428810 in words is "one hundred sixty-one million, four hundred twenty-eight thousand, eight hundred ten".