206298540 has 72 divisors (see below), whose sum is σ = 715172640. Its totient is φ = 47153664.

The previous prime is 206298539. The next prime is 206298541. The reversal of 206298540 is 45892602.

It is a happy number.

206298540 is a `hidden beast` number, since 20 + 6 + 2 + 98 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (206298539) and next prime (206298541).

It is a super-2 number, since 2×206298540² = 85118175212263200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 206298495 and 206298504.

It is not an unprimeable number, because it can be changed into a prime (206298541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80605 + ... + 83124.

Almost surely, 2^206298540 is an apocalyptic number.

206298540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206298540 is an abundant number, since it is smaller than the sum of its proper divisors (508874100).

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

206298540 is a wasteful number, since it uses less digits than its factorization.

206298540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163751 (or 163746 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 206298540 is about 14363.0964628105. The cubic root of 206298540 is about 590.8792215420.

The spelling of 206298540 in words is "two hundred six million, two hundred ninety-eight thousand, five hundred forty".