30698808 has 64 divisors (see below), whose sum is σ = 88128000. Its totient is φ = 8729472.

The previous prime is 30698803. The next prime is 30698809. The reversal of 30698808 is 80889603.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30698808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30698803) 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, 60058 + ... + 60566.

It is an arithmetic number, because the mean of its divisors is an integer number (1377000).

Almost surely, 2^30698808 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 30698808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44064000).

30698808 is an abundant number, since it is smaller than the sum of its proper divisors (57429192).

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

30698808 is a wasteful number, since it uses less digits than its factorization.

30698808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 30698808 is about 5540.6505033254. The cubic root of 30698808 is about 313.1173774743.

The spelling of 30698808 in words is "thirty million, six hundred ninety-eight thousand, eight hundred eight".