20453250 has 32 divisors (see below), whose sum is σ = 51053184. Its totient is φ = 5454000.

The previous prime is 20453203. The next prime is 20453269. The reversal of 20453250 is 5235402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12886 + ... + 14385.

It is an arithmetic number, because the mean of its divisors is an integer number (1595412).

Almost surely, 2^20453250 is an apocalyptic number.

20453250 is an abundant number, since it is smaller than the sum of its proper divisors (30599934).

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

20453250 is a wasteful number, since it uses less digits than its factorization.

20453250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27291 (or 27281 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20453250 is about 4522.5269485101. The cubic root of 20453250 is about 273.4769801497.

Adding to 20453250 its reverse (5235402), we get a palindrome (25688652).

The spelling of 20453250 in words is "twenty million, four hundred fifty-three thousand, two hundred fifty".