201380806 has 32 divisors (see below), whose sum is σ = 342351360. Its totient is φ = 88044000.

The previous prime is 201380797. The next prime is 201380833. The reversal of 201380806 is 608083102.

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, 59356 + ... + 62656.

It is an arithmetic number, because the mean of its divisors is an integer number (10698480).

Almost surely, 2^201380806 is an apocalyptic number.

201380806 is a deficient number, since it is larger than the sum of its proper divisors (140970554).

201380806 is a wasteful number, since it uses less digits than its factorization.

201380806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 201380806 is about 14190.8705159338. The cubic root of 201380806 is about 586.1462959880.

The spelling of 201380806 in words is "two hundred one million, three hundred eighty thousand, eight hundred six".