201228987 has 8 divisors (see below), whose sum is σ = 268476736. Its totient is φ = 134066952.

The previous prime is 201228971. The next prime is 201229013. The reversal of 201228987 is 789822102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201228987 - 2⁴ = 201228971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201328987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15733 + ... + 25494.

It is an arithmetic number, because the mean of its divisors is an integer number (33559592).

Almost surely, 2^201228987 is an apocalyptic number.

201228987 is a deficient number, since it is larger than the sum of its proper divisors (67247749).

201228987 is a wasteful number, since it uses less digits than its factorization.

201228987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42857.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 201228987 is about 14185.5203288424. The cubic root of 201228987 is about 585.9989623235.

The spelling of 201228987 in words is "two hundred one million, two hundred twenty-eight thousand, nine hundred eighty-seven".