30907044 has 72 divisors (see below), whose sum is σ = 91145600. Its totient is φ = 8827056.

The previous prime is 30907043. The next prime is 30907061. The reversal of 30907044 is 44070903.

It is a junction number, because it is equal to n+sod(n) for n = 30906999 and 30907017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30907043) 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, 11097 + ... + 13599.

Almost surely, 2^30907044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30907044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45572800).

30907044 is an abundant number, since it is smaller than the sum of its proper divisors (60238556).

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

30907044 is a wasteful number, since it uses less digits than its factorization.

30907044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2515 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30907044 is about 5559.4104003932. The cubic root of 30907044 is about 313.8237614336.

Adding to 30907044 its reverse (44070903), we get a palindrome (74977947).

The spelling of 30907044 in words is "thirty million, nine hundred seven thousand, forty-four".