30298840 has 64 divisors (see below), whose sum is σ = 80105760. Its totient is φ = 10168320.

The previous prime is 30298817. The next prime is 30298867. The reversal of 30298840 is 4889203.

30298840 = T₃₄₁ + T₃₄₂ + ... + T₆₀₄.

It is a junction number, because it is equal to n+sod(n) for n = 30298796 and 30298805.

It is a congruent number.

It is an unprimeable number.

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, 3072 + ... + 8368.

Almost surely, 2^30298840 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 30298840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40052880).

30298840 is an abundant number, since it is smaller than the sum of its proper divisors (49806920).

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

30298840 is a wasteful number, since it uses less digits than its factorization.

30298840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 30298840 is about 5504.4382092998. The cubic root of 30298840 is about 311.7515828874.

The spelling of 30298840 in words is "thirty million, two hundred ninety-eight thousand, eight hundred forty".