161357280 has 96 divisors (see below), whose sum is σ = 580898304. Its totient is φ = 36880896.

The previous prime is 161357257. The next prime is 161357299. The reversal of 161357280 is 82753161.

161357280 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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, 20652 + ... + 27371.

It is an arithmetic number, because the mean of its divisors is an integer number (6051024).

Almost surely, 2^161357280 is an apocalyptic number.

161357280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161357280 is an abundant number, since it is smaller than the sum of its proper divisors (419541024).

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

161357280 is a wasteful number, since it uses less digits than its factorization.

161357280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48048 (or 48040 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 161357280 is about 12702.6485427253. The cubic root of 161357280 is about 544.4142965706.

The spelling of 161357280 in words is "one hundred sixty-one million, three hundred fifty-seven thousand, two hundred eighty".