30650986 has 4 divisors (see below), whose sum is σ = 45976482. Its totient is φ = 15325492.

The previous prime is 30650981. The next prime is 30650993. The reversal of 30650986 is 68905603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68905603 = 13 ⋅5300431.

It can be written as a sum of positive squares in only one way, i.e., 16248961 + 14402025 = 4031^2 + 3795^2 .

It is not an unprimeable number, because it can be changed into a prime (30650981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7662745 + ... + 7662748.

Almost surely, 2^30650986 is an apocalyptic number.

30650986 is a deficient number, since it is larger than the sum of its proper divisors (15325496).

30650986 is a wasteful number, since it uses less digits than its factorization.

30650986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15325495.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 30650986 is about 5536.3332630903. Note that the first 3 decimals coincide. The cubic root of 30650986 is about 312.9547036086.

The spelling of 30650986 in words is "thirty million, six hundred fifty thousand, nine hundred eighty-six".