30948887 has 4 divisors (see below), whose sum is σ = 32016120. Its totient is φ = 29881656.

The previous prime is 30948871. The next prime is 30948893. The reversal of 30948887 is 78884903.

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

It is a cyclic number.

It is not a de Polignac number, because 30948887 - 2⁴ = 30948871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30948187) 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, 533573 + ... + 533630.

It is an arithmetic number, because the mean of its divisors is an integer number (8004030).

Almost surely, 2^30948887 is an apocalyptic number.

30948887 is a deficient number, since it is larger than the sum of its proper divisors (1067233).

30948887 is a wasteful number, since it uses less digits than its factorization.

30948887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067232.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 30948887 is about 5563.1723863278. The cubic root of 30948887 is about 313.9653193066.

The spelling of 30948887 in words is "thirty million, nine hundred forty-eight thousand, eight hundred eighty-seven".