30442734 has 48 divisors (see below), whose sum is σ = 75723648. Its totient is φ = 8658576.

The previous prime is 30442703. The next prime is 30442739. The reversal of 30442734 is 43724403.

It is a junction number, because it is equal to n+sod(n) for n = 30442698 and 30442707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30442739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38289 + ... + 39075.

It is an arithmetic number, because the mean of its divisors is an integer number (1577576).

Almost surely, 2^30442734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30442734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37861824).

30442734 is an abundant number, since it is smaller than the sum of its proper divisors (45280914).

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

30442734 is a wasteful number, since it uses less digits than its factorization.

30442734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 30442734 is about 5517.4934526468. The cubic root of 30442734 is about 312.2443229239.

It can be divided in two parts, 3044 and 2734, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 30442734 in words is "thirty million, four hundred forty-two thousand, seven hundred thirty-four".