30561696 has 108 divisors (see below), whose sum is σ = 95637906. Its totient is φ = 9250560.

The previous prime is 30561683. The next prime is 30561701. The reversal of 30561696 is 69616503.

30561696 is a `hidden beast` number, since 3 + 0 + 561 + 6 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21344400 + 9217296 = 4620^2 + 3036^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30561696.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34410 + ... + 35286.

Almost surely, 2^30561696 is an apocalyptic number.

30561696 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30561696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47818953).

30561696 is an abundant number, since it is smaller than the sum of its proper divisors (65076210).

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

30561696 is a wasteful number, since it uses less digits than its factorization.

30561696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 30561696 is about 5528.2633801222. The cubic root of 30561696 is about 312.6505165050.

It can be divided in two parts, 305 and 61696, that added together give a square (62001 = 249²).

The spelling of 30561696 in words is "thirty million, five hundred sixty-one thousand, six hundred ninety-six".