206346540 has 48 divisors (see below), whose sum is σ = 596413440. Its totient is φ = 53250240.

The previous prime is 206346487. The next prime is 206346557. The reversal of 206346540 is 45643602.

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

It is a junction number, because it is equal to n+sod(n) for n = 206346498 and 206346507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53610 + ... + 57329.

It is an arithmetic number, because the mean of its divisors is an integer number (12425280).

Almost surely, 2^206346540 is an apocalyptic number.

206346540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206346540 is an abundant number, since it is smaller than the sum of its proper divisors (390066900).

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

206346540 is a wasteful number, since it uses less digits than its factorization.

206346540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110982 (or 110980 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 206346540 is about 14364.7673145095. The cubic root of 206346540 is about 590.9250451063.

The spelling of 206346540 in words is "two hundred six million, three hundred forty-six thousand, five hundred forty".