161676140 has 12 divisors (see below), whose sum is σ = 339519936. Its totient is φ = 64670448.

The previous prime is 161676133. The next prime is 161676181. The reversal of 161676140 is 41676161.

It is a happy number.

It is a super-2 number, since 2×161676140² = 52278348490599200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161676097 and 161676106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4041884 + ... + 4041923.

It is an arithmetic number, because the mean of its divisors is an integer number (28293328).

Almost surely, 2^161676140 is an apocalyptic number.

161676140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161676140 is an abundant number, since it is smaller than the sum of its proper divisors (177843796).

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

161676140 is a wasteful number, since it uses less digits than its factorization.

161676140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8083816 (or 8083814 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 161676140 is about 12715.1932741897. The cubic root of 161676140 is about 544.7726684236.

The spelling of 161676140 in words is "one hundred sixty-one million, six hundred seventy-six thousand, one hundred forty".