30676978 has 8 divisors (see below), whose sum is σ = 46089180. Its totient is φ = 15313920.

The previous prime is 30676973. The next prime is 30676981. The reversal of 30676978 is 87967603.

It can be written as a sum of positive squares in 2 ways, for example, as 27426169 + 3250809 = 5237^2 + 1803^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30676973) 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, 10683 + ... + 13246.

Almost surely, 2^30676978 is an apocalyptic number.

30676978 is a deficient number, since it is larger than the sum of its proper divisors (15412202).

30676978 is a wasteful number, since it uses less digits than its factorization.

30676978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24572.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 30676978 is about 5538.6801676934. The cubic root of 30676978 is about 313.0431403551.

It can be divided in two parts, 306 and 76978, that added together give a square (77284 = 278²).

The spelling of 30676978 in words is "thirty million, six hundred seventy-six thousand, nine hundred seventy-eight".