20010392 has 8 divisors (see below), whose sum is σ = 37519500. Its totient is φ = 10005192.

The previous prime is 20010373. The next prime is 20010409. The reversal of 20010392 is 29301002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20010392.

It is a congruent number.

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, 1250642 + ... + 1250657.

Almost surely, 2^20010392 is an apocalyptic number.

It is an amenable number.

20010392 is a deficient number, since it is larger than the sum of its proper divisors (17509108).

20010392 is a wasteful number, since it uses less digits than its factorization.

20010392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501305 (or 2501301 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20010392 is about 4473.2976650342. The cubic root of 20010392 is about 271.4887672322.

Adding to 20010392 its reverse (29301002), we get a palindrome (49311394).

It can be divided in two parts, 20010 and 392, that added together give a palindrome (20402).

The spelling of 20010392 in words is "twenty million, ten thousand, three hundred ninety-two".