100857438 has 48 divisors (see below), whose sum is σ = 248766336. Its totient is φ = 29232720.

The previous prime is 100857433. The next prime is 100857467. The reversal of 100857438 is 834758001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100857433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6520 + ... + 15627.

It is an arithmetic number, because the mean of its divisors is an integer number (5182632).

Almost surely, 2^100857438 is an apocalyptic number.

100857438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100857438 is an abundant number, since it is smaller than the sum of its proper divisors (147908898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100857438 is a wasteful number, since it uses less digits than its factorization.

100857438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22189 (or 22186 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 100857438 is about 10042.7803919034. The cubic root of 100857438 is about 465.4817345406.

The spelling of 100857438 in words is "one hundred million, eight hundred fifty-seven thousand, four hundred thirty-eight".