30878942 has 8 divisors (see below), whose sum is σ = 47570376. Its totient is φ = 15022152.

The previous prime is 30878923. The next prime is 30878951. The reversal of 30878942 is 24987803.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30878942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208568 + ... + 208715.

It is an arithmetic number, because the mean of its divisors is an integer number (5946297).

Almost surely, 2^30878942 is an apocalyptic number.

30878942 is a deficient number, since it is larger than the sum of its proper divisors (16691434).

30878942 is a wasteful number, since it uses less digits than its factorization.

30878942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417322.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 30878942 is about 5556.8823993315. The cubic root of 30878942 is about 313.7286186178.

The spelling of 30878942 in words is "thirty million, eight hundred seventy-eight thousand, nine hundred forty-two".