206407274 has 4 divisors (see below), whose sum is σ = 309610914. Its totient is φ = 103203636.

The previous prime is 206407273. The next prime is 206407283. The reversal of 206407274 is 472704602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 162384049 + 44023225 = 12743^2 + 6635^2 .

It is a super-2 number, since 2×206407274² = 85207925520222152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206407274.

It is not an unprimeable number, because it can be changed into a prime (206407273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51601817 + ... + 51601820.

Almost surely, 2^206407274 is an apocalyptic number.

206407274 is a deficient number, since it is larger than the sum of its proper divisors (103203640).

206407274 is a wasteful number, since it uses less digits than its factorization.

206407274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103203639.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 206407274 is about 14366.8811507578. The cubic root of 206407274 is about 590.9830150972.

The spelling of 206407274 in words is "two hundred six million, four hundred seven thousand, two hundred seventy-four".