30233140 has 48 divisors (see below), whose sum is σ = 76833792. Its totient is φ = 9755136.

The previous prime is 30233131. The next prime is 30233141. The reversal of 30233140 is 4133203.

30233140 = 179² + 180² + ... + 458².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30233141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3972 + ... + 8731.

It is an arithmetic number, because the mean of its divisors is an integer number (1600704).

Almost surely, 2^30233140 is an apocalyptic number.

It is an amenable number.

30233140 is an abundant number, since it is smaller than the sum of its proper divisors (46600652).

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

30233140 is a wasteful number, since it uses less digits than its factorization.

30233140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12736 (or 12734 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30233140 is about 5498.4670590993. The cubic root of 30233140 is about 311.5260857914.

Adding to 30233140 its reverse (4133203), we get a palindrome (34366343).

The spelling of 30233140 in words is "thirty million, two hundred thirty-three thousand, one hundred forty".