30645342 has 96 divisors (see below), whose sum is σ = 83498688. Its totient is φ = 7907328.

The previous prime is 30645313. The next prime is 30645371. The reversal of 30645342 is 24354603.

It is an interprime number because it is at equal distance from previous prime (30645313) and next prime (30645371).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86638 + ... + 86990.

It is an arithmetic number, because the mean of its divisors is an integer number (869778).

Almost surely, 2^30645342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30645342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41749344).

30645342 is an abundant number, since it is smaller than the sum of its proper divisors (52853346).

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

30645342 is a wasteful number, since it uses less digits than its factorization.

30645342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 30645342 is about 5535.8235159730. The cubic root of 30645342 is about 312.9354935167.

Adding to 30645342 its reverse (24354603), we get a palindrome (54999945).

The spelling of 30645342 in words is "thirty million, six hundred forty-five thousand, three hundred forty-two".