296640 has 84 divisors (see below), whose sum is σ = 1030224. Its totient is φ = 78336.

The previous prime is 296627. The next prime is 296651. The reversal of 296640 is 46692.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2829 + ... + 2931.

2²⁹⁶⁶⁴⁰ is an apocalyptic number.

296640 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 296640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515112).

296640 is an abundant number, since it is smaller than the sum of its proper divisors (733584).

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

296640 is a wasteful number, since it uses less digits than its factorization.

296640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 296640 is about 544.6466744597. The cubic root of 296640 is about 66.6924344835.

The spelling of 296640 in words is "two hundred ninety-six thousand, six hundred forty".