30045132 has 72 divisors (see below), whose sum is σ = 83747664. Its totient is φ = 9023616.

The previous prime is 30045109. The next prime is 30045133. The reversal of 30045132 is 23154003.

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

It is not an unprimeable number, because it can be changed into a prime (30045133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19378 + ... + 20870.

It is an arithmetic number, because the mean of its divisors is an integer number (1163162).

Almost surely, 2^30045132 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 30045132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41873832).

30045132 is an abundant number, since it is smaller than the sum of its proper divisors (53702532).

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

30045132 is a wasteful number, since it uses less digits than its factorization.

30045132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559 (or 1554 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30045132 is about 5481.3439957733. The cubic root of 30045132 is about 310.8789898761.

Adding to 30045132 its reverse (23154003), we get a palindrome (53199135).

The spelling of 30045132 in words is "thirty million, forty-five thousand, one hundred thirty-two".