298625640 has 32 divisors (see below), whose sum is σ = 895877280. Its totient is φ = 79633472.

The previous prime is 298625627. The next prime is 298625653. The reversal of 298625640 is 46526892.

It is an interprime number because it is at equal distance from previous prime (298625627) and next prime (298625653).

It is a junction number, because it is equal to n+sod(n) for n = 298625592 and 298625601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244154 + ... + 1244393.

It is an arithmetic number, because the mean of its divisors is an integer number (27996165).

Almost surely, 2^298625640 is an apocalyptic number.

298625640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298625640 is an abundant number, since it is smaller than the sum of its proper divisors (597251640).

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

298625640 is a wasteful number, since it uses less digits than its factorization.

298625640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488561 (or 2488557 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 298625640 is about 17280.7881764693. The cubic root of 298625640 is about 668.4091162807.

The spelling of 298625640 in words is "two hundred ninety-eight million, six hundred twenty-five thousand, six hundred forty".