20810232 has 24 divisors (see below), whose sum is σ = 56361240. Its totient is φ = 6936720.

The previous prime is 20810221. The next prime is 20810233. The reversal of 20810232 is 23201802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20810233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144444 + ... + 144587.

It is an arithmetic number, because the mean of its divisors is an integer number (2348385).

Almost surely, 2^20810232 is an apocalyptic number.

It is an amenable number.

20810232 is an abundant number, since it is smaller than the sum of its proper divisors (35551008).

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

20810232 is a wasteful number, since it uses less digits than its factorization.

20810232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289043 (or 289036 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20810232 is about 4561.8233196826. The cubic root of 20810232 is about 275.0588612296.

It can be divided in two parts, 208 and 10232, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 20810232 in words is "twenty million, eight hundred ten thousand, two hundred thirty-two".