30141540 has 144 divisors (see below), whose sum is σ = 107505216. Its totient is φ = 6739200.

The previous prime is 30141539. The next prime is 30141557. The reversal of 30141540 is 4514103.

It is a happy number.

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 47 ways as a sum of consecutive naturals, for example, 25155 + ... + 26325.

It is an arithmetic number, because the mean of its divisors is an integer number (746564).

Almost surely, 2^30141540 is an apocalyptic number.

30141540 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 30141540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53752608).

30141540 is an abundant number, since it is smaller than the sum of its proper divisors (77363676).

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

30141540 is a wasteful number, since it uses less digits than its factorization.

30141540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30141540 is about 5490.1311459746. The cubic root of 30141540 is about 311.2111481964.

Adding to 30141540 its reverse (4514103), we get a palindrome (34655643).

It can be divided in two parts, 3014 and 1540, that added together give a palindrome (4554).

The spelling of 30141540 in words is "thirty million, one hundred forty-one thousand, five hundred forty".