201628715 has 4 divisors (see below), whose sum is σ = 241954464. Its totient is φ = 161302968.

The previous prime is 201628709. The next prime is 201628723. The reversal of 201628715 is 517826102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517826102 = 2 ⋅258913051.

It is a cyclic number.

It is not a de Polignac number, because 201628715 - 2¹⁶ = 201563179 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 20162867 + ... + 20162876.

It is an arithmetic number, because the mean of its divisors is an integer number (60488616).

Almost surely, 2^201628715 is an apocalyptic number.

201628715 is a deficient number, since it is larger than the sum of its proper divisors (40325749).

201628715 is an equidigital number, since it uses as much as digits as its factorization.

201628715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40325748.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 201628715 is about 14199.6026352853. The cubic root of 201628715 is about 586.3867216730.

The spelling of 201628715 in words is "two hundred one million, six hundred twenty-eight thousand, seven hundred fifteen".