101868390 has 96 divisors (see below), whose sum is σ = 288943200. Its totient is φ = 24749568.

The previous prime is 101868379. The next prime is 101868391. The reversal of 101868390 is 93868101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101868391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96586 + ... + 97634.

It is an arithmetic number, because the mean of its divisors is an integer number (3009825).

Almost surely, 2^101868390 is an apocalyptic number.

101868390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 101868390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144471600).

101868390 is an abundant number, since it is smaller than the sum of its proper divisors (187074810).

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

101868390 is a wasteful number, since it uses less digits than its factorization.

101868390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 101868390 is about 10092.9871693171. The cubic root of 101868390 is about 467.0318304003.

The spelling of 101868390 in words is "one hundred one million, eight hundred sixty-eight thousand, three hundred ninety".