101891238 has 16 divisors (see below), whose sum is σ = 205653360. Its totient is φ = 33651936.

The previous prime is 101891233. The next prime is 101891249. The reversal of 101891238 is 832198101.

It is a junction number, because it is equal to n+sod(n) for n = 101891199 and 101891208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101891233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77245 + ... + 78552.

It is an arithmetic number, because the mean of its divisors is an integer number (12853335).

Almost surely, 2^101891238 is an apocalyptic number.

101891238 is an abundant number, since it is smaller than the sum of its proper divisors (103762122).

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

101891238 is a wasteful number, since it uses less digits than its factorization.

101891238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155911.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 101891238 is about 10094.1189808720. The cubic root of 101891238 is about 467.0667445530.

The spelling of 101891238 in words is "one hundred one million, eight hundred ninety-one thousand, two hundred thirty-eight".