30871340 has 24 divisors (see below), whose sum is σ = 64934352. Its totient is φ = 12328640.

The previous prime is 30871289. The next prime is 30871343. The reversal of 30871340 is 4317803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30871343) 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, 22967 + ... + 24273.

It is an arithmetic number, because the mean of its divisors is an integer number (2705598).

Almost surely, 2^30871340 is an apocalyptic number.

It is an amenable number.

30871340 is an abundant number, since it is smaller than the sum of its proper divisors (34063012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30871340 is a wasteful number, since it uses less digits than its factorization.

30871340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497 (or 2495 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 30871340 is about 5556.1983405922. The cubic root of 30871340 is about 313.7028711823.

The spelling of 30871340 in words is "thirty million, eight hundred seventy-one thousand, three hundred forty".