30696642 has 12 divisors (see below), whose sum is σ = 66509430. Its totient is φ = 10232208.

The previous prime is 30696641. The next prime is 30696667. The reversal of 30696642 is 24669603.

30696642 is a `hidden beast` number, since 3 + 0 + 6 + 9 + 6 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28419561 + 2277081 = 5331^2 + 1509^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30696597 and 30696606.

It is not an unprimeable number, because it can be changed into a prime (30696641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852667 + ... + 852702.

Almost surely, 2^30696642 is an apocalyptic number.

30696642 is an abundant number, since it is smaller than the sum of its proper divisors (35812788).

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

30696642 is a wasteful number, since it uses less digits than its factorization.

30696642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705377 (or 1705374 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 30696642 is about 5540.4550354641. The cubic root of 30696642 is about 313.1100131472.

The spelling of 30696642 in words is "thirty million, six hundred ninety-six thousand, six hundred forty-two".