32091930 has 128 divisors (see below), whose sum is σ = 94832640. Its totient is φ = 7672320.

The previous prime is 32091907. The next prime is 32091949. The reversal of 32091930 is 3919023.

It is a super-2 number, since 2×32091930² = 2059783942249800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 32091894 and 32091903.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 143799 + ... + 144021.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^32091930 is an apocalyptic number.

32091930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 32091930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47416320).

32091930 is an abundant number, since it is smaller than the sum of its proper divisors (62740710).

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

32091930 is a wasteful number, since it uses less digits than its factorization.

32091930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 32091930 is about 5664.9739628704. The cubic root of 32091930 is about 317.7839400985.

The spelling of 32091930 in words is "thirty-two million, ninety-one thousand, nine hundred thirty".