190881856 has 63 divisors (see below), whose sum is σ = 419015037. Its totient is φ = 86211840.

The previous prime is 190881851. The next prime is 190881869. The reversal of 190881856 is 658188091.

The square root of 190881856 is 13816.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 55950400 + 134931456 = 7480^2 + 11616^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190881851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1215730 + ... + 1215886.

Almost surely, 2^190881856 is an apocalyptic number.

190881856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

190881856 is the 13816-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190881856

190881856 is an abundant number, since it is smaller than the sum of its proper divisors (228133181).

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

190881856 is an equidigital number, since it uses as much as digits as its factorization.

190881856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 46.

The cubic root of 190881856 is about 575.7777563388. Note that the first 4 decimals are identical.

The spelling of 190881856 in words is "one hundred ninety million, eight hundred eighty-one thousand, eight hundred fifty-six".