204152643 has 40 divisors (see below), whose sum is σ = 331718112. Its totient is φ = 124602624.

The previous prime is 204152633. The next prime is 204152647. The reversal of 204152643 is 346251402.

204152643 is a `hidden beast` number, since 2 + 0 + 4 + 15 + 2 + 643 = 666.

204152643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204152643 - 2⁶ = 204152579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204152647) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48946 + ... + 52952.

Almost surely, 2^204152643 is an apocalyptic number.

204152643 is a deficient number, since it is larger than the sum of its proper divisors (127565469).

204152643 is a wasteful number, since it uses less digits than its factorization.

204152643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073 (or 4064 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 204152643 is about 14288.1994316989. The cubic root of 204152643 is about 588.8233208210.

The spelling of 204152643 in words is "two hundred four million, one hundred fifty-two thousand, six hundred forty-three".