30478950 has 96 divisors (see below), whose sum is σ = 85173120. Its totient is φ = 8013600.

The previous prime is 30478939. The next prime is 30478957. The reversal of 30478950 is 5987403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30478957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144345 + ... + 144555.

It is an arithmetic number, because the mean of its divisors is an integer number (887220).

Almost surely, 2^30478950 is an apocalyptic number.

30478950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30478950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42586560).

30478950 is an abundant number, since it is smaller than the sum of its proper divisors (54694170).

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

30478950 is a wasteful number, since it uses less digits than its factorization.

30478950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 30478950 is about 5520.7744022012. The cubic root of 30478950 is about 312.3680936635.

The spelling of 30478950 in words is "thirty million, four hundred seventy-eight thousand, nine hundred fifty".