100438258 has 8 divisors (see below), whose sum is σ = 150719580. Its totient is φ = 50198400.

The previous prime is 100438253. The next prime is 100438259. The reversal of 100438258 is 852834001.

It can be written as a sum of positive squares in 2 ways, for example, as 100340289 + 97969 = 10017^2 + 313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (100438253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3363 + ... + 14566.

Almost surely, 2^100438258 is an apocalyptic number.

100438258 is a deficient number, since it is larger than the sum of its proper divisors (50281322).

100438258 is a wasteful number, since it uses less digits than its factorization.

100438258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20732.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 100438258 is about 10021.8889437072. Note that the first 3 decimals coincide. The cubic root of 100438258 is about 464.8359663454.

The spelling of 100438258 in words is "one hundred million, four hundred thirty-eight thousand, two hundred fifty-eight".