298270640 has 40 divisors (see below), whose sum is σ = 694404960. Its totient is φ = 119149056.

The previous prime is 298270633. The next prime is 298270657. The reversal of 298270640 is 46072892.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 298270594 and 298270603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71492 + ... + 75548.

It is an arithmetic number, because the mean of its divisors is an integer number (17360124).

Almost surely, 2^298270640 is an apocalyptic number.

298270640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298270640 is an abundant number, since it is smaller than the sum of its proper divisors (396134320).

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

298270640 is a wasteful number, since it uses less digits than its factorization.

298270640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989 (or 4983 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 298270640 is about 17270.5135997746. The cubic root of 298270640 is about 668.1441476006.

The spelling of 298270640 in words is "two hundred ninety-eight million, two hundred seventy thousand, six hundred forty".