30470000 has 100 divisors (see below), whose sum is σ = 80767896. Its totient is φ = 11040000.

The previous prime is 30469991. The next prime is 30470003. The reversal of 30470000 is 7403.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30470003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 109862 + ... + 110138.

Almost surely, 2^30470000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30470000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40383948).

30470000 is an abundant number, since it is smaller than the sum of its proper divisors (50297896).

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

30470000 is a wasteful number, since it uses less digits than its factorization.

30470000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 30470000 is about 5519.9637679970. The cubic root of 30470000 is about 312.3375155308.

Adding to 30470000 its reverse (7403), we get a palindrome (30477403).

The spelling of 30470000 in words is "thirty million, four hundred seventy thousand".