205380750 has 64 divisors (see below), whose sum is σ = 515144448. Its totient is φ = 54500000.

The previous prime is 205380739. The next prime is 205380751. The reversal of 205380750 is 57083502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205380751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187705 + ... + 188795.

It is an arithmetic number, because the mean of its divisors is an integer number (8049132).

Almost surely, 2^205380750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205380750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257572224).

205380750 is an abundant number, since it is smaller than the sum of its proper divisors (309763698).

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

205380750 is a wasteful number, since it uses less digits than its factorization.

205380750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 205380750 is about 14331.1112618666. Note that the first 3 decimals coincide. The cubic root of 205380750 is about 590.0016757589.

The spelling of 205380750 in words is "two hundred five million, three hundred eighty thousand, seven hundred fifty".