205651432 has 48 divisors (see below), whose sum is σ = 452835360. Its totient is φ = 87294816.

The previous prime is 205651409. The next prime is 205651451. The reversal of 205651432 is 234156502.

It is a super-2 number, since 2×205651432² = 84585022967301248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 205651432.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39493 + ... + 44395.

It is an arithmetic number, because the mean of its divisors is an integer number (9434070).

Almost surely, 2^205651432 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 205651432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226417680).

205651432 is an abundant number, since it is smaller than the sum of its proper divisors (247183928).

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

205651432 is a wasteful number, since it uses less digits than its factorization.

205651432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030 (or 5019 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 205651432 is about 14340.5520116905. The cubic root of 205651432 is about 590.2607599634.

The spelling of 205651432 in words is "two hundred five million, six hundred fifty-one thousand, four hundred thirty-two".