272161890 has 512 divisors, whose sum is σ = 1045094400. Its totient is φ = 48522240.

The previous prime is 272161853. The next prime is 272161919. The reversal of 272161890 is 98161272.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 5135104 + ... + 5135156.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^272161890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 272161890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522547200).

272161890 is an abundant number, since it is smaller than the sum of its proper divisors (772932510).

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

272161890 is a wasteful number, since it uses less digits than its factorization.

272161890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 272161890 is about 16497.3297839378. The cubic root of 272161890 is about 648.0508790640.

The spelling of 272161890 in words is "two hundred seventy-two million, one hundred sixty-one thousand, eight hundred ninety".