20349252 has 96 divisors (see below), whose sum is σ = 65802240. Its totient is φ = 5283360.

The previous prime is 20349229. The next prime is 20349253. The reversal of 20349252 is 25294302.

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

It is not an unprimeable number, because it can be changed into a prime (20349253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7093 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (685440).

Almost surely, 2^20349252 is an apocalyptic number.

20349252 is a gapful number since it is divisible by the number (22) 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 20349252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32901120).

20349252 is an abundant number, since it is smaller than the sum of its proper divisors (45452988).

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

20349252 is a wasteful number, since it uses less digits than its factorization.

20349252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478 (or 2470 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20349252 is about 4511.0145200387. The cubic root of 20349252 is about 273.0126790392.

It can be divided in two parts, 203 and 49252, that added together give a triangular number (49455 = T₃₁₄).

The spelling of 20349252 in words is "twenty million, three hundred forty-nine thousand, two hundred fifty-two".