100378172 has 12 divisors (see below), whose sum is σ = 176123136. Its totient is φ = 50057280.

The previous prime is 100378147. The next prime is 100378207. The reversal of 100378172 is 271873001.

It is a super-3 number, since 3×100378172³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 31229 + ... + 34292.

It is an arithmetic number, because the mean of its divisors is an integer number (14676928).

Almost surely, 2^100378172 is an apocalyptic number.

It is an amenable number.

100378172 is a deficient number, since it is larger than the sum of its proper divisors (75744964).

100378172 is a wasteful number, since it uses less digits than its factorization.

100378172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65908 (or 65906 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 100378172 is about 10018.8907569651. The cubic root of 100378172 is about 464.7432536484.

The spelling of 100378172 in words is "one hundred million, three hundred seventy-eight thousand, one hundred seventy-two".