206747420 has 48 divisors (see below), whose sum is σ = 485212896. Its totient is φ = 73344000.

The previous prime is 206747381. The next prime is 206747477. The reversal of 206747420 is 24747602.

206747420 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 2441 + ... + 20480.

It is an arithmetic number, because the mean of its divisors is an integer number (10108602).

Almost surely, 2^206747420 is an apocalyptic number.

206747420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206747420 is an abundant number, since it is smaller than the sum of its proper divisors (278465476).

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

206747420 is a wasteful number, since it uses less digits than its factorization.

206747420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22982 (or 22980 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 206747420 is about 14378.7141288781. The cubic root of 206747420 is about 591.3074710184.

The spelling of 206747420 in words is "two hundred six million, seven hundred forty-seven thousand, four hundred twenty".