100864490 has 16 divisors (see below), whose sum is σ = 182082600. Its totient is φ = 40228800.

The previous prime is 100864481. The next prime is 100864549. The reversal of 100864490 is 94468001.

It can be written as a sum of positive squares in 4 ways, for example, as 100661089 + 203401 = 10033^2 + 451^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10961 + ... + 17940.

Almost surely, 2^100864490 is an apocalyptic number.

100864490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100864490 is a deficient number, since it is larger than the sum of its proper divisors (81218110).

100864490 is a wasteful number, since it uses less digits than its factorization.

100864490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29257.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 100864490 is about 10043.1314837555. The cubic root of 100864490 is about 465.4925831891.

The spelling of 100864490 in words is "one hundred million, eight hundred sixty-four thousand, four hundred ninety".