6988864428 has 288 divisors, whose sum is σ = 22665132672. Its totient is φ = 1766707200.

The previous prime is 6988864417. The next prime is 6988864429. The reversal of 6988864428 is 8244688896.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6988864429) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8192850 + ... + 8193702.

Almost surely, 2^6988864428 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 6988864428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11332566336).

6988864428 is an abundant number, since it is smaller than the sum of its proper divisors (15676268244).

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

6988864428 is a wasteful number, since it uses less digits than its factorization.

6988864428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 980 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 63.

The square root of 6988864428 is about 83599.4283951750. The cubic root of 6988864428 is about 1911.9162833247.

The spelling of 6988864428 in words is "six billion, nine hundred eighty-eight million, eight hundred sixty-four thousand, four hundred twenty-eight".