206725240 has 32 divisors (see below), whose sum is σ = 465665760. Its totient is φ = 82595200.

The previous prime is 206725231. The next prime is 206725241. The reversal of 206725240 is 42527602.

It is a junction number, because it is equal to n+sod(n) for n = 206725199 and 206725208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206725241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40005 + ... + 44875.

It is an arithmetic number, because the mean of its divisors is an integer number (14552055).

Almost surely, 2^206725240 is an apocalyptic number.

206725240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206725240 is an abundant number, since it is smaller than the sum of its proper divisors (258940520).

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

206725240 is a wasteful number, since it uses less digits than its factorization.

206725240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943 (or 5939 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 206725240 is about 14377.9428292089. The cubic root of 206725240 is about 591.2863249766.

The spelling of 206725240 in words is "two hundred six million, seven hundred twenty-five thousand, two hundred forty".