30678534 has 32 divisors (see below), whose sum is σ = 68400000. Its totient is φ = 10192392.

The previous prime is 30678533. The next prime is 30678539. The reversal of 30678534 is 43587603.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30678533) 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 15 ways as a sum of consecutive naturals, for example, 19717 + ... + 21215.

It is an arithmetic number, because the mean of its divisors is an integer number (2137500).

Almost surely, 2^30678534 is an apocalyptic number.

30678534 is an abundant number, since it is smaller than the sum of its proper divisors (37721466).

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

30678534 is a wasteful number, since it uses less digits than its factorization.

30678534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 30678534 is about 5538.8206325896. The cubic root of 30678534 is about 313.0484329983.

The spelling of 30678534 in words is "thirty million, six hundred seventy-eight thousand, five hundred thirty-four".