206152040 has 32 divisors (see below), whose sum is σ = 464649480. Its totient is φ = 82317312.

The previous prime is 206152003. The next prime is 206152057. The reversal of 206152040 is 40251602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 122722084 + 83429956 = 11078^2 + 9134^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 20504 + ... + 28856.

Almost surely, 2^206152040 is an apocalyptic number.

206152040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206152040 is an abundant number, since it is smaller than the sum of its proper divisors (258497440).

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

206152040 is a wasteful number, since it uses less digits than its factorization.

206152040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8981 (or 8977 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 206152040 is about 14357.9956818492. The cubic root of 206152040 is about 590.7393202373.

The spelling of 206152040 in words is "two hundred six million, one hundred fifty-two thousand, forty".