30532140 has 120 divisors (see below), whose sum is σ = 98062272. Its totient is φ = 7948800.

The previous prime is 30532127. The next prime is 30532171. The reversal of 30532140 is 4123503.

30532140 is a `hidden beast` number, since 305 + 321 + 40 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 75940 + ... + 76340.

Almost surely, 2^30532140 is an apocalyptic number.

30532140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30532140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49031136).

30532140 is an abundant number, since it is smaller than the sum of its proper divisors (67530132).

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

30532140 is a wasteful number, since it uses less digits than its factorization.

30532140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 458 counting only the distinct ones).

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

The square root of 30532140 is about 5525.5895613047. The cubic root of 30532140 is about 312.5496966297.

Adding to 30532140 its reverse (4123503), we get a palindrome (34655643).

The spelling of 30532140 in words is "thirty million, five hundred thirty-two thousand, one hundred forty".