30865044 has 96 divisors (see below), whose sum is σ = 88058880. Its totient is φ = 8218368.

The previous prime is 30865039. The next prime is 30865061. The reversal of 30865044 is 44056803.

It is a super-2 number, since 2×30865044² = 1905301882243872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132352 + ... + 132584.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 2^30865044 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 30865044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44029440).

30865044 is an abundant number, since it is smaller than the sum of its proper divisors (57193836).

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

30865044 is a wasteful number, since it uses less digits than its factorization.

30865044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 30865044 is about 5555.6317372554. The cubic root of 30865044 is about 313.6815438761.

The spelling of 30865044 in words is "thirty million, eight hundred sixty-five thousand, forty-four".