20252435 has 24 divisors (see below), whose sum is σ = 28470816. Its totient is φ = 13829760.

The previous prime is 20252381. The next prime is 20252447. The reversal of 20252435 is 53425202.

It is not a de Polignac number, because 20252435 - 2¹⁸ = 19990291 is a prime.

It is a super-2 number, since 2×20252435² = 820322246858450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20252435.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83915 + ... + 84155.

It is an arithmetic number, because the mean of its divisors is an integer number (1186284).

Almost surely, 2^20252435 is an apocalyptic number.

20252435 is a deficient number, since it is larger than the sum of its proper divisors (8218381).

20252435 is an frugal number, since it uses more digits than its factorization.

20252435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20252435 is about 4500.2705474227. The cubic root of 20252435 is about 272.5790136441.

Adding to 20252435 its reverse (53425202), we get a palindrome (73677637).

The spelling of 20252435 in words is "twenty million, two hundred fifty-two thousand, four hundred thirty-five".