206406480 has 80 divisors (see below), whose sum is σ = 731274624. Its totient is φ = 47178240.

The previous prime is 206406449. The next prime is 206406611. The reversal of 206406480 is 84604602.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×206406480³ (a number of 26 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59751 + ... + 63110.

Almost surely, 2^206406480 is an apocalyptic number.

206406480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206406480 is an abundant number, since it is smaller than the sum of its proper divisors (524868144).

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

206406480 is a wasteful number, since it uses less digits than its factorization.

206406480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122884 (or 122878 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 206406480 is about 14366.8535177331. The cubic root of 206406480 is about 590.9822573056.

The spelling of 206406480 in words is "two hundred six million, four hundred six thousand, four hundred eighty".