205540152 has 32 divisors (see below), whose sum is σ = 518659200. Its totient is φ = 67872224.

The previous prime is 205540133. The next prime is 205540163. The reversal of 205540152 is 251045502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37452 + ... + 42587.

It is an arithmetic number, because the mean of its divisors is an integer number (16208100).

Almost surely, 2^205540152 is an apocalyptic number.

It is an amenable number.

205540152 is an abundant number, since it is smaller than the sum of its proper divisors (313119048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205540152 is a wasteful number, since it uses less digits than its factorization.

205540152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80155 (or 80151 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 205540152 is about 14336.6715802518. The cubic root of 205540152 is about 590.1542754656.

Adding to 205540152 its reverse (251045502), we get a palindrome (456585654).

The spelling of 205540152 in words is "two hundred five million, five hundred forty thousand, one hundred fifty-two".