298639680 has 224 divisors, whose sum is σ = 1040221440. Its totient is φ = 72253440.

The previous prime is 298639673. The next prime is 298639681. The reversal of 298639680 is 86936892.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298639681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 472965 + ... + 473595.

Almost surely, 2^298639680 is an apocalyptic number.

298639680 is a gapful number since it is divisible by the number (20) 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 298639680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520110720).

298639680 is an abundant number, since it is smaller than the sum of its proper divisors (741581760).

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

298639680 is a wasteful number, since it uses less digits than its factorization.

298639680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 298639680 is about 17281.1944031655. The cubic root of 298639680 is about 668.4195912876.

The spelling of 298639680 in words is "two hundred ninety-eight million, six hundred thirty-nine thousand, six hundred eighty".