206354434 has 32 divisors (see below), whose sum is σ = 368069184. Its totient is φ = 85529280.

The previous prime is 206354431. The next prime is 206354437. The reversal of 206354434 is 434453602.

It is an interprime number because it is at equal distance from previous prime (206354431) and next prime (206354437).

It is a junction number, because it is equal to n+sod(n) for n = 206354396 and 206354405.

It is not an unprimeable number, because it can be changed into a prime (206354431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19392 + ... + 28084.

It is an arithmetic number, because the mean of its divisors is an integer number (11502162).

Almost surely, 2^206354434 is an apocalyptic number.

206354434 is a deficient number, since it is larger than the sum of its proper divisors (161714750).

206354434 is a wasteful number, since it uses less digits than its factorization.

206354434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8802.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 206354434 is about 14365.0420813863. The cubic root of 206354434 is about 590.9325804928.

The spelling of 206354434 in words is "two hundred six million, three hundred fifty-four thousand, four hundred thirty-four".