30142332 has 72 divisors (see below), whose sum is σ = 84040320. Its totient is φ = 9033120.

The previous prime is 30142313. The next prime is 30142361. The reversal of 30142332 is 23324103.

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 23 ways as a sum of consecutive naturals, for example, 40419 + ... + 41157.

Almost surely, 2^30142332 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 30142332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42020160).

30142332 is an abundant number, since it is smaller than the sum of its proper divisors (53897988).

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

30142332 is a wasteful number, since it uses less digits than its factorization.

30142332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30142332 is about 5490.2032749253. The cubic root of 30142332 is about 311.2138739704.

Adding to 30142332 its reverse (23324103), we get a palindrome (53466435).

The spelling of 30142332 in words is "thirty million, one hundred forty-two thousand, three hundred thirty-two".