206628470 has 8 divisors (see below), whose sum is σ = 371931264. Its totient is φ = 82651384.

The previous prime is 206628467. The next prime is 206628473. The reversal of 206628470 is 74826602.

206628470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (206628467) and next prime (206628473).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×206628470² = 85390649229081800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206628470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206628473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10331414 + ... + 10331433.

It is an arithmetic number, because the mean of its divisors is an integer number (46491408).

Almost surely, 2^206628470 is an apocalyptic number.

206628470 is a deficient number, since it is larger than the sum of its proper divisors (165302794).

206628470 is a wasteful number, since it uses less digits than its factorization.

206628470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20662854.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 206628470 is about 14374.5772111739. The cubic root of 206628470 is about 591.1940483744.

The spelling of 206628470 in words is "two hundred six million, six hundred twenty-eight thousand, four hundred seventy".