104222781 has 40 divisors (see below), whose sum is σ = 173499480. Its totient is φ = 61907328.

The previous prime is 104222777. The next prime is 104222791. The reversal of 104222781 is 187222401.

It can be written as a sum of positive squares in 4 ways, for example, as 22410756 + 81812025 = 4734^2 + 9045^2 .

It is not a de Polignac number, because 104222781 - 2² = 104222777 is a prime.

It is a super-2 number, since 2×104222781² = 21724776158747922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104222731) 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 39 ways as a sum of consecutive naturals, for example, 28831 + ... + 32243.

It is an arithmetic number, because the mean of its divisors is an integer number (4337487).

Almost surely, 2^104222781 is an apocalyptic number.

It is an amenable number.

104222781 is a deficient number, since it is larger than the sum of its proper divisors (69276699).

104222781 is a wasteful number, since it uses less digits than its factorization.

104222781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467 (or 3458 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 104222781 is about 10208.9559211508. The cubic root of 104222781 is about 470.6024882488.

It can be divided in two parts, 10422 and 2781, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 104222781 in words is "one hundred four million, two hundred twenty-two thousand, seven hundred eighty-one".