20257352 has 16 divisors (see below), whose sum is σ = 39009660. Its totient is φ = 9854784.

The previous prime is 20257351. The next prime is 20257357. The reversal of 20257352 is 25375202.

It can be written as a sum of positive squares in 2 ways, for example, as 18783556 + 1473796 = 4334^2 + 1214^2 .

It is not an unprimeable number, because it can be changed into a prime (20257351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33923 + ... + 34514.

Almost surely, 2^20257352 is an apocalyptic number.

It is an amenable number.

20257352 is a deficient number, since it is larger than the sum of its proper divisors (18752308).

20257352 is a wasteful number, since it uses less digits than its factorization.

20257352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68480 (or 68476 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 20257352 is about 4500.8168147571. The cubic root of 20257352 is about 272.6010712808.

The spelling of 20257352 in words is "twenty million, two hundred fifty-seven thousand, three hundred fifty-two".