30972678 has 16 divisors (see below), whose sum is σ = 67576896. Its totient is φ = 9385640.

The previous prime is 30972673. The next prime is 30972707. The reversal of 30972678 is 87627903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30972673) 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, 234576 + ... + 234707.

It is an arithmetic number, because the mean of its divisors is an integer number (4223556).

Almost surely, 2^30972678 is an apocalyptic number.

30972678 is an abundant number, since it is smaller than the sum of its proper divisors (36604218).

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

30972678 is a wasteful number, since it uses less digits than its factorization.

30972678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469299.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 30972678 is about 5565.3102339402. The cubic root of 30972678 is about 314.0457490781.

It can be divided in two parts, 3097 and 2678, that added together give a palindrome (5775).

The spelling of 30972678 in words is "thirty million, nine hundred seventy-two thousand, six hundred seventy-eight".