101808432 has 90 divisors (see below), whose sum is σ = 313232556. Its totient is φ = 30845760.

The previous prime is 101808409. The next prime is 101808437. The reversal of 101808432 is 234808101.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 101808396 and 101808405.

It is not an unprimeable number, because it can be changed into a prime (101808437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14503 + ... + 20345.

Almost surely, 2^101808432 is an apocalyptic number.

101808432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101808432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156616278).

101808432 is an abundant number, since it is smaller than the sum of its proper divisors (211424124).

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

101808432 is a wasteful number, since it uses less digits than its factorization.

101808432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5879 (or 5859 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 101808432 is about 10090.0164519192. The cubic root of 101808432 is about 466.9401834227.

The spelling of 101808432 in words is "one hundred one million, eight hundred eight thousand, four hundred thirty-two".