206220740 has 48 divisors (see below), whose sum is σ = 488738880. Its totient is φ = 72401280.

The previous prime is 206220719. The next prime is 206220797. The reversal of 206220740 is 47022602.

It is a super-2 number, since 2×206220740² = 85053987212295200, which contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 9782 + ... + 22541.

It is an arithmetic number, because the mean of its divisors is an integer number (10182060).

Almost surely, 2^206220740 is an apocalyptic number.

206220740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206220740 is an abundant number, since it is smaller than the sum of its proper divisors (282518140).

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

206220740 is a wasteful number, since it uses less digits than its factorization.

206220740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32372 (or 32370 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 206220740 is about 14360.3878777699. The cubic root of 206220740 is about 590.8049340822.

The spelling of 206220740 in words is "two hundred six million, two hundred twenty thousand, seven hundred forty".