100557378 has 24 divisors (see below), whose sum is σ = 220124268. Its totient is φ = 33172992.

The previous prime is 100557361. The next prime is 100557383. The reversal of 100557378 is 873755001.

100557378 is a `hidden beast` number, since 10 + 0 + 5 + 573 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 96766569 + 3790809 = 9837^2 + 1947^2 .

It is a super-2 number, since 2×100557378² = 20223572540469768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27051 + ... + 30542.

Almost surely, 2^100557378 is an apocalyptic number.

100557378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100557378 is an abundant number, since it is smaller than the sum of its proper divisors (119566890).

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

100557378 is a wasteful number, since it uses less digits than its factorization.

100557378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57698 (or 57695 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 100557378 is about 10027.8301740706. The cubic root of 100557378 is about 465.0196592451.

The spelling of 100557378 in words is "one hundred million, five hundred fifty-seven thousand, three hundred seventy-eight".