30211146 has 36 divisors (see below), whose sum is σ = 76146642. Its totient is φ = 8631504.

The previous prime is 30211117. The next prime is 30211147. The reversal of 30211146 is 64111203.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 1535121 = 5355^2 + 1239^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30211147) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16245 + ... + 18008.

Almost surely, 2^30211146 is an apocalyptic number.

30211146 is an abundant number, since it is smaller than the sum of its proper divisors (45935496).

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

30211146 is a wasteful number, since it uses less digits than its factorization.

30211146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34275 (or 34265 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 30211146 is about 5496.4666832430. The cubic root of 30211146 is about 311.4505244824.

Adding to 30211146 its reverse (64111203), we get a palindrome (94322349).

The spelling of 30211146 in words is "thirty million, two hundred eleven thousand, one hundred forty-six".