100280245 has 16 divisors (see below), whose sum is σ = 130178160. Its totient is φ = 73718784.

The previous prime is 100280239. The next prime is 100280261. The reversal of 100280245 is 542082001.

It can be written as a sum of positive squares in 8 ways, for example, as 49 + 100280196 = 7^2 + 10014^2 .

It is a cyclic number.

It is not a de Polignac number, because 100280245 - 2³ = 100280237 is a prime.

It is a super-2 number, since 2×100280245² = 20112255074520050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11517 + ... + 18253.

It is an arithmetic number, because the mean of its divisors is an integer number (8136135).

Almost surely, 2^100280245 is an apocalyptic number.

It is an amenable number.

100280245 is a deficient number, since it is larger than the sum of its proper divisors (29897915).

100280245 is a wasteful number, since it uses less digits than its factorization.

100280245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 100280245 is about 10014.0024465745. The cubic root of 100280245 is about 464.5920729698.

The spelling of 100280245 in words is "one hundred million, two hundred eighty thousand, two hundred forty-five".