20869350 has 36 divisors (see below), whose sum is σ = 51895116. Its totient is φ = 5550240.

The previous prime is 20869339. The next prime is 20869393. The reversal of 20869350 is 5396802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 55764 + ... + 56136.

It is an arithmetic number, because the mean of its divisors is an integer number (1441531).

Almost surely, 2^20869350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20869350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25947558).

20869350 is an abundant number, since it is smaller than the sum of its proper divisors (31025766).

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

20869350 is an equidigital number, since it uses as much as digits as its factorization.

20869350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20869350 is about 4568.2983702906. The cubic root of 20869350 is about 275.3190786701.

The spelling of 20869350 in words is "twenty million, eight hundred sixty-nine thousand, three hundred fifty".