30440252 has 6 divisors (see below), whose sum is σ = 53270448. Its totient is φ = 15220124.

The previous prime is 30440239. The next prime is 30440257. The reversal of 30440252 is 25204403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3805028 + ... + 3805035.

It is an arithmetic number, because the mean of its divisors is an integer number (8878408).

Almost surely, 2^30440252 is an apocalyptic number.

It is an amenable number.

30440252 is a deficient number, since it is larger than the sum of its proper divisors (22830196).

30440252 is a wasteful number, since it uses less digits than its factorization.

30440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7610067 (or 7610065 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 30440252 is about 5517.2685270884. The cubic root of 30440252 is about 312.2358369201.

Adding to 30440252 its reverse (25204403), we get a palindrome (55644655).

The spelling of 30440252 in words is "thirty million, four hundred forty thousand, two hundred fifty-two".