161457760 has 48 divisors (see below), whose sum is σ = 382926096. Its totient is φ = 64332288.

The previous prime is 161457743. The next prime is 161457787. The reversal of 161457760 is 67754161.

161457760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 42499 + ... + 46141.

It is an arithmetic number, because the mean of its divisors is an integer number (7977627).

Almost surely, 2^161457760 is an apocalyptic number.

161457760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161457760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191463048).

161457760 is an abundant number, since it is smaller than the sum of its proper divisors (221468336).

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

161457760 is a wasteful number, since it uses less digits than its factorization.

161457760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935 (or 3927 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 161457760 is about 12706.6030078853. The cubic root of 161457760 is about 544.5272785562.

The spelling of 161457760 in words is "one hundred sixty-one million, four hundred fifty-seven thousand, seven hundred sixty".