30878349 has 8 divisors (see below), whose sum is σ = 41232672. Its totient is φ = 20554800.

The previous prime is 30878347. The next prime is 30878369. The reversal of 30878349 is 94387803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30878349 - 2¹ = 30878347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30878349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30878347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5239 + ... + 9444.

It is an arithmetic number, because the mean of its divisors is an integer number (5154084).

Almost surely, 2^30878349 is an apocalyptic number.

It is an amenable number.

30878349 is a deficient number, since it is larger than the sum of its proper divisors (10354323).

30878349 is a wasteful number, since it uses less digits than its factorization.

30878349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15387.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 30878349 is about 5556.8290418187. The cubic root of 30878349 is about 313.7266103207.

The spelling of 30878349 in words is "thirty million, eight hundred seventy-eight thousand, three hundred forty-nine".