298249780 has 48 divisors (see below), whose sum is σ = 646442496. Its totient is φ = 115522560.

The previous prime is 298249723. The next prime is 298249781. The reversal of 298249780 is 87942892.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298249781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89545 + ... + 92815.

It is an arithmetic number, because the mean of its divisors is an integer number (13467552).

Almost surely, 2^298249780 is an apocalyptic number.

298249780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298249780 is an abundant number, since it is smaller than the sum of its proper divisors (348192716).

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

298249780 is a wasteful number, since it uses less digits than its factorization.

298249780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 298249780 is about 17269.9096697117. The cubic root of 298249780 is about 668.1285713532.

The spelling of 298249780 in words is "two hundred ninety-eight million, two hundred forty-nine thousand, seven hundred eighty".