20250724 has 12 divisors (see below), whose sum is σ = 38164924. Its totient is φ = 9346464.

The previous prime is 20250707. The next prime is 20250733. The reversal of 20250724 is 42705202.

It can be written as a sum of positive squares in 2 ways, for example, as 9241600 + 11009124 = 3040^2 + 3318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20250695 and 20250704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194667 + ... + 194770.

Almost surely, 2^20250724 is an apocalyptic number.

It is an amenable number.

20250724 is a deficient number, since it is larger than the sum of its proper divisors (17914200).

20250724 is a wasteful number, since it uses less digits than its factorization.

20250724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389454 (or 389452 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 20250724 is about 4500.0804437254. The cubic root of 20250724 is about 272.5713372696.

Adding to 20250724 its reverse (42705202), we get a palindrome (62955926).

The spelling of 20250724 in words is "twenty million, two hundred fifty thousand, seven hundred twenty-four".