30532440 has 32 divisors (see below), whose sum is σ = 91597680. Its totient is φ = 8141952.

The previous prime is 30532409. The next prime is 30532457. The reversal of 30532440 is 4423503.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127099 + ... + 127338.

Almost surely, 2^30532440 is an apocalyptic number.

30532440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30532440 is an abundant number, since it is smaller than the sum of its proper divisors (61065240).

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

30532440 is a wasteful number, since it uses less digits than its factorization.

30532440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254451 (or 254447 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 30532440 is about 5525.6167076626. The cubic root of 30532440 is about 312.5507203007.

Adding to 30532440 its reverse (4423503), we get a palindrome (34955943).

The spelling of 30532440 in words is "thirty million, five hundred thirty-two thousand, four hundred forty".