20270250 has 320 divisors, whose sum is σ = 76108032. Its totient is φ = 3888000.

The previous prime is 20270203. The next prime is 20270251. The reversal of 20270250 is 5207202.

It is a happy number.

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 (20270251) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1559244 + ... + 1559256.

Almost surely, 2^20270250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20270250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38054016).

20270250 is an abundant number, since it is smaller than the sum of its proper divisors (55837782).

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

20270250 is a wasteful number, since it uses less digits than its factorization.

20270250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 20270250 is about 4502.2494377811. The cubic root of 20270250 is about 272.6589146859.

Adding to 20270250 its reverse (5207202), we get a palindrome (25477452).

The spelling of 20270250 in words is "twenty million, two hundred seventy thousand, two hundred fifty".