100457638 has 4 divisors (see below), whose sum is σ = 150686460. Its totient is φ = 50228818.

The previous prime is 100457633. The next prime is 100457647. The reversal of 100457638 is 836754001.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100457633) by changing a digit.

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 as a sum of consecutive naturals, namely, 25114408 + ... + 25114411.

It is an arithmetic number, because the mean of its divisors is an integer number (37671615).

Almost surely, 2^100457638 is an apocalyptic number.

100457638 is a deficient number, since it is larger than the sum of its proper divisors (50228822).

100457638 is an equidigital number, since it uses as much as digits as its factorization.

100457638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50228821.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 100457638 is about 10022.8557806645. The cubic root of 100457638 is about 464.8658617984.

The spelling of 100457638 in words is "one hundred million, four hundred fifty-seven thousand, six hundred thirty-eight".