30440032 has 24 divisors (see below), whose sum is σ = 68490576. Its totient is φ = 13045632.

The previous prime is 30440029. The next prime is 30440041. The reversal of 30440032 is 23004403.

It is a super-2 number, since 2×30440032² = 1853191096322048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 30439988 and 30440015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67723 + ... + 68170.

It is an arithmetic number, because the mean of its divisors is an integer number (2853774).

Almost surely, 2^30440032 is an apocalyptic number.

30440032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30440032 is an abundant number, since it is smaller than the sum of its proper divisors (38050544).

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

30440032 is a wasteful number, since it uses less digits than its factorization.

30440032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135910 (or 135902 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 30440032 is about 5517.2485896505. The cubic root of 30440032 is about 312.2350847138.

Adding to 30440032 its reverse (23004403), we get a palindrome (53444435).

The spelling of 30440032 in words is "thirty million, four hundred forty thousand, thirty-two".