101828281 has 3 divisors (see below), whose sum is σ = 101838373. Its totient is φ = 101818190.

The previous prime is 101828269. The next prime is 101828327. The reversal of 101828281 is 182828101.

It is a happy number.

The square root of 101828281 is 10091.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 101828281 - 2¹⁵ = 101795513 is a prime.

It is a super-2 number, since 2×101828281² = 20737997622829922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101828231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5046 + ... + 15136.

Almost surely, 2^101828281 is an apocalyptic number.

101828281 is the 10091-st square number.

101828281 is the 5046-th centered octagonal number.

It is an amenable number.

101828281 is a deficient number, since it is larger than the sum of its proper divisors (10092).

101828281 is an frugal number, since it uses more digits than its factorization.

101828281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20182 (or 10091 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 31.

The cubic root of 101828281 is about 466.9705269913.

The spelling of 101828281 in words is "one hundred one million, eight hundred twenty-eight thousand, two hundred eighty-one".