30211434 has 64 divisors (see below), whose sum is σ = 73906560. Its totient is φ = 9072000.

The previous prime is 30211429. The next prime is 30211451. The reversal of 30211434 is 43411203.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107374 + ... + 107654.

It is an arithmetic number, because the mean of its divisors is an integer number (1154790).

Almost surely, 2^30211434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30211434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36953280).

30211434 is an abundant number, since it is smaller than the sum of its proper divisors (43695126).

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

30211434 is a wasteful number, since it uses less digits than its factorization.

30211434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30211434 is about 5496.4928818293. The cubic root of 30211434 is about 311.4515141554.

Adding to 30211434 its reverse (43411203), we get a palindrome (73622637).

The spelling of 30211434 in words is "thirty million, two hundred eleven thousand, four hundred thirty-four".