30278468 has 12 divisors (see below), whose sum is σ = 57804432. Its totient is φ = 13762920.

The previous prime is 30278467. The next prime is 30278471. The reversal of 30278468 is 86487203.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30278467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344030 + ... + 344117.

It is an arithmetic number, because the mean of its divisors is an integer number (4817036).

Almost surely, 2^30278468 is an apocalyptic number.

It is an amenable number.

30278468 is a deficient number, since it is larger than the sum of its proper divisors (27525964).

30278468 is a wasteful number, since it uses less digits than its factorization.

30278468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688162 (or 688160 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 30278468 is about 5502.5873914005. The cubic root of 30278468 is about 311.6816965245.

The spelling of 30278468 in words is "thirty million, two hundred seventy-eight thousand, four hundred sixty-eight".