161434020 has 48 divisors (see below), whose sum is σ = 493109568. Its totient is φ = 39135360.

The previous prime is 161433983. The next prime is 161434037. The reversal of 161434020 is 20434161.

161434020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121639 + ... + 122958.

It is an arithmetic number, because the mean of its divisors is an integer number (10273116).

Almost surely, 2^161434020 is an apocalyptic number.

161434020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161434020 is an abundant number, since it is smaller than the sum of its proper divisors (331675548).

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

161434020 is a wasteful number, since it uses less digits than its factorization.

161434020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244620 (or 244618 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 161434020 is about 12705.6688135651. The cubic root of 161434020 is about 544.5005889931.

Adding to 161434020 its reverse (20434161), we get a palindrome (181868181).

The spelling of 161434020 in words is "one hundred sixty-one million, four hundred thirty-four thousand, twenty".