30140560 has 20 divisors (see below), whose sum is σ = 70076988. Its totient is φ = 12056192.

The previous prime is 30140543. The next prime is 30140567. The reversal of 30140560 is 6504103.

It can be written as a sum of positive squares in 2 ways, for example, as 18113536 + 12027024 = 4256^2 + 3468^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×30140560² = 1816906714227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30140567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188299 + ... + 188458.

Almost surely, 2^30140560 is an apocalyptic number.

It is an amenable number.

30140560 is an abundant number, since it is smaller than the sum of its proper divisors (39936428).

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

30140560 is a wasteful number, since it uses less digits than its factorization.

30140560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376770 (or 376764 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30140560 is about 5490.0418941935. The cubic root of 30140560 is about 311.2077753293.

Adding to 30140560 its reverse (6504103), we get a palindrome (36644663).

The spelling of 30140560 in words is "thirty million, one hundred forty thousand, five hundred sixty".