20252392 has 8 divisors (see below), whose sum is σ = 37973250. Its totient is φ = 10126192.

The previous prime is 20252381. The next prime is 20252447. The reversal of 20252392 is 29325202.

It can be written as a sum of positive squares in only one way, i.e., 16695396 + 3556996 = 4086^2 + 1886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1265767 + ... + 1265782.

Almost surely, 2^20252392 is an apocalyptic number.

It is an amenable number.

20252392 is a deficient number, since it is larger than the sum of its proper divisors (17720858).

20252392 is a wasteful number, since it uses less digits than its factorization.

20252392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531555 (or 2531551 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20252392 is about 4500.2657699296. The cubic root of 20252392 is about 272.5788207306.

Adding to 20252392 its reverse (29325202), we get a palindrome (49577594).

The spelling of 20252392 in words is "twenty million, two hundred fifty-two thousand, three hundred ninety-two".