30738078 has 24 divisors (see below), whose sum is σ = 76113648. Its totient is φ = 8782272.

The previous prime is 30738061. The next prime is 30738079. The reversal of 30738078 is 87083703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30738079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121851 + ... + 122102.

It is an arithmetic number, because the mean of its divisors is an integer number (3171402).

Almost surely, 2^30738078 is an apocalyptic number.

30738078 is an abundant number, since it is smaller than the sum of its proper divisors (45375570).

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

30738078 is a wasteful number, since it uses less digits than its factorization.

30738078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243968 (or 243965 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 30738078 is about 5544.1931784526. The cubic root of 30738078 is about 313.2508341225.

The spelling of 30738078 in words is "thirty million, seven hundred thirty-eight thousand, seventy-eight".