298179640 has 32 divisors (see below), whose sum is σ = 731896560. Its totient is φ = 108428800.

The previous prime is 298179619. The next prime is 298179683. The reversal of 298179640 is 46971892.

It is a super-2 number, since 2×298179640² = 177822195421059200, which contains 22 as substring.

It is a congruent number.

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, 338401 + ... + 339280.

Almost surely, 2^298179640 is an apocalyptic number.

298179640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298179640 is an abundant number, since it is smaller than the sum of its proper divisors (433716920).

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

298179640 is a wasteful number, since it uses less digits than its factorization.

298179640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677703 (or 677699 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 298179640 is about 17267.8788506290. The cubic root of 298179640 is about 668.0761922008.

It can be divided in two parts, 2981 and 79640, that added together give a triangular number (82621 = T₄₀₆).

The spelling of 298179640 in words is "two hundred ninety-eight million, one hundred seventy-nine thousand, six hundred forty".