161761024 has 72 divisors (see below), whose sum is σ = 342018432. Its totient is φ = 76200960.

The previous prime is 161761013. The next prime is 161761049. The reversal of 161761024 is 420167161.

It is a junction number, because it is equal to n+sod(n) for n = 161760983 and 161761001.

It is a congruent number.

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, 488539 + ... + 488869.

It is an arithmetic number, because the mean of its divisors is an integer number (4750256).

Almost surely, 2^161761024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161761024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171009216).

161761024 is an abundant number, since it is smaller than the sum of its proper divisors (180257408).

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

161761024 is an equidigital number, since it uses as much as digits as its factorization.

161761024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 161761024 is about 12718.5307327537. The cubic root of 161761024 is about 544.8679914826.

The spelling of 161761024 in words is "one hundred sixty-one million, seven hundred sixty-one thousand, twenty-four".