30989700 has 108 divisors (see below), whose sum is σ = 111034560. Its totient is φ = 7081920.

The previous prime is 30989687. The next prime is 30989701. The reversal of 30989700 is 798903.

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

It is not an unprimeable number, because it can be changed into a prime (30989701) 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 35 ways as a sum of consecutive naturals, for example, 3841 + ... + 8759.

Almost surely, 2^30989700 is an apocalyptic number.

30989700 is a gapful number since it is divisible by the number (30) 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 30989700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55517280).

30989700 is an abundant number, since it is smaller than the sum of its proper divisors (80044860).

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

30989700 is a wasteful number, since it uses less digits than its factorization.

30989700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946 (or 4936 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 30989700 is about 5566.8393186799. The cubic root of 30989700 is about 314.1032697500.

It can be divided in two parts, 309 and 89700, that added together give a palindrome (90009).

The spelling of 30989700 in words is "thirty million, nine hundred eighty-nine thousand, seven hundred".