30140252 has 24 divisors (see below), whose sum is σ = 56908656. Its totient is φ = 13914368.

The previous prime is 30140239. The next prime is 30140321. The reversal of 30140252 is 25204103.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 30140252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (2371194).

Almost surely, 2^30140252 is an apocalyptic number.

It is an amenable number.

30140252 is a deficient number, since it is larger than the sum of its proper divisors (26768404).

30140252 is a wasteful number, since it uses less digits than its factorization.

30140252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437 (or 8435 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30140252 is about 5490.0138433341. The cubic root of 30140252 is about 311.2067152702.

Adding to 30140252 its reverse (25204103), we get a palindrome (55344355).

The spelling of 30140252 in words is "thirty million, one hundred forty thousand, two hundred fifty-two".