30201987 has 4 divisors (see below), whose sum is σ = 40269320. Its totient is φ = 20134656.

The previous prime is 30201973. The next prime is 30201989. The reversal of 30201987 is 78910203.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30201987 - 2¹² = 30197891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30201989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5033662 + ... + 5033667.

It is an arithmetic number, because the mean of its divisors is an integer number (10067330).

Almost surely, 2^30201987 is an apocalyptic number.

30201987 is a deficient number, since it is larger than the sum of its proper divisors (10067333).

30201987 is a wasteful number, since it uses less digits than its factorization.

30201987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10067332.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 30201987 is about 5495.6334484753. The cubic root of 30201987 is about 311.4190475382.

The spelling of 30201987 in words is "thirty million, two hundred one thousand, nine hundred eighty-seven".