9802257780 has 192 divisors, whose sum is σ = 32097461760. Its totient is φ = 2188732416.

The previous prime is 9802257779. The next prime is 9802257797. The reversal of 9802257780 is 877522089.

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 63 ways as a sum of consecutive naturals, for example, 5987122 + ... + 5988758.

It is an arithmetic number, because the mean of its divisors is an integer number (167174280).

Almost surely, 2^9802257780 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 9802257780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16048730880).

9802257780 is an abundant number, since it is smaller than the sum of its proper divisors (22295203980).

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

9802257780 is a wasteful number, since it uses less digits than its factorization.

9802257780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978 (or 1976 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 9802257780 is about 99006.3522204510. The cubic root of 9802257780 is about 2140.1392883979.

The spelling of 9802257780 in words is "nine billion, eight hundred two million, two hundred fifty-seven thousand, seven hundred eighty".