298228140 has 144 divisors (see below), whose sum is σ = 1061965632. Its totient is φ = 66313728.

The previous prime is 298228129. The next prime is 298228169. The reversal of 298228140 is 41822892.

298228140 is a `hidden beast` number, since 298 + 228 + 140 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 298228095 and 298228104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43422 + ... + 49818.

Almost surely, 2^298228140 is an apocalyptic number.

298228140 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 298228140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530982816).

298228140 is an abundant number, since it is smaller than the sum of its proper divisors (763737492).

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

298228140 is a wasteful number, since it uses less digits than its factorization.

298228140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456 (or 6451 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 298228140 is about 17269.2831350928. The cubic root of 298228140 is about 668.1124119091.

The spelling of 298228140 in words is "two hundred ninety-eight million, two hundred twenty-eight thousand, one hundred forty".