206120634 has 16 divisors (see below), whose sum is σ = 413164800. Its totient is φ = 68552960.

The previous prime is 206120633. The next prime is 206120659. The reversal of 206120634 is 436021602.

It is not an unprimeable number, because it can be changed into a prime (206120633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35562 + ... + 40949.

It is an arithmetic number, because the mean of its divisors is an integer number (25822800).

Almost surely, 2^206120634 is an apocalyptic number.

206120634 is an abundant number, since it is smaller than the sum of its proper divisors (207044166).

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

206120634 is a wasteful number, since it uses less digits than its factorization.

206120634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76965.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 206120634 is about 14356.9019638639. The cubic root of 206120634 is about 590.7093202086.

The spelling of 206120634 in words is "two hundred six million, one hundred twenty thousand, six hundred thirty-four".