30440342 has 16 divisors (see below), whose sum is σ = 47206800. Its totient is φ = 14713440.

The previous prime is 30440341. The next prime is 30440351. The reversal of 30440342 is 24304403.

It is a happy number.

It is a super-2 number, since 2×30440342² = 1853228842153928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5084 + ... + 9312.

It is an arithmetic number, because the mean of its divisors is an integer number (2950425).

Almost surely, 2^30440342 is an apocalyptic number.

30440342 is a deficient number, since it is larger than the sum of its proper divisors (16766458).

30440342 is a wasteful number, since it uses less digits than its factorization.

30440342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 30440342 is about 5517.2766832922. The cubic root of 30440342 is about 312.2361446398.

Adding to 30440342 its reverse (24304403), we get a palindrome (54744745).

The spelling of 30440342 in words is "thirty million, four hundred forty thousand, three hundred forty-two".