30989616 has 80 divisors (see below), whose sum is σ = 92256000. Its totient is φ = 8780544.

The previous prime is 30989611. The next prime is 30989617. The reversal of 30989616 is 61698903.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30989611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49755 + ... + 50373.

It is an arithmetic number, because the mean of its divisors is an integer number (1153200).

Almost surely, 2^30989616 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 30989616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46128000).

30989616 is an abundant number, since it is smaller than the sum of its proper divisors (61266384).

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

30989616 is a wasteful number, since it uses less digits than its factorization.

30989616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 30989616 is about 5566.8317739986. The cubic root of 30989616 is about 314.1029859492.

The spelling of 30989616 in words is "thirty million, nine hundred eighty-nine thousand, six hundred sixteen".