204142648 has 8 divisors (see below), whose sum is σ = 382767480. Its totient is φ = 102071320.

The previous prime is 204142639. The next prime is 204142663. The reversal of 204142648 is 846241402.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12758908 + ... + 12758923.

It is an arithmetic number, because the mean of its divisors is an integer number (47845935).

Almost surely, 2^204142648 is an apocalyptic number.

It is an amenable number.

204142648 is a deficient number, since it is larger than the sum of its proper divisors (178624832).

204142648 is a wasteful number, since it uses less digits than its factorization.

204142648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25517837 (or 25517833 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 204142648 is about 14287.8496632628. The cubic root of 204142648 is about 588.8137113689.

It can be divided in two parts, 204 and 142648, that multiplied together give a palindrome (29100192).

The spelling of 204142648 in words is "two hundred four million, one hundred forty-two thousand, six hundred forty-eight".