298196640 has 480 divisors, whose sum is σ = 1273345920. Its totient is φ = 64198656.

The previous prime is 298196627. The next prime is 298196651. The reversal of 298196640 is 46691892.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-2 number, since 2×298196640² = 177842472214579200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1723594 + ... + 1723766.

It is an arithmetic number, because the mean of its divisors is an integer number (2652804).

Almost surely, 2^298196640 is an apocalyptic number.

298196640 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 298196640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636672960).

298196640 is an abundant number, since it is smaller than the sum of its proper divisors (975149280).

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

298196640 is a wasteful number, since it uses less digits than its factorization.

298196640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 298196640 is about 17268.3710870481. The cubic root of 298196640 is about 668.0888882157.

The spelling of 298196640 in words is "two hundred ninety-eight million, one hundred ninety-six thousand, six hundred forty".