30378745 has 32 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 21288960.

The previous prime is 30378737. The next prime is 30378749. The reversal of 30378745 is 54787303.

It is not a de Polignac number, because 30378745 - 2³ = 30378737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30378749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79966 + ... + 80344.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^30378745 is an apocalyptic number.

It is an amenable number.

30378745 is a deficient number, since it is larger than the sum of its proper divisors (10989575).

30378745 is a wasteful number, since it uses less digits than its factorization.

30378745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 30378745 is about 5511.6916640901. The cubic root of 30378745 is about 312.0253958344.

The spelling of 30378745 in words is "thirty million, three hundred seventy-eight thousand, seven hundred forty-five".