205515232 has 48 divisors (see below), whose sum is σ = 445903920. Its totient is φ = 92639232.

The previous prime is 205515187. The next prime is 205515241. The reversal of 205515232 is 232515502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 205515197 and 205515206.

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, 12144 + ... + 23632.

It is an arithmetic number, because the mean of its divisors is an integer number (9289665).

Almost surely, 2^205515232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205515232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222951960).

205515232 is an abundant number, since it is smaller than the sum of its proper divisors (240388688).

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

205515232 is a wasteful number, since it uses less digits than its factorization.

205515232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11555 (or 11547 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 205515232 is about 14335.8024539961. The cubic root of 205515232 is about 590.1304241016.

The spelling of 205515232 in words is "two hundred five million, five hundred fifteen thousand, two hundred thirty-two".