391296 has 32 divisors (see below), whose sum is σ = 1040400. Its totient is φ = 130304.

The previous prime is 391291. The next prime is 391301. The reversal of 391296 is 692193.

It is an interprime number because it is at equal distance from previous prime (391291) and next prime (391301).

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×391296² = 306225119232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (391291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126 + ... + 893.

2³⁹¹²⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 391296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520200).

391296 is an abundant number, since it is smaller than the sum of its proper divisors (649104).

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

391296 is a wasteful number, since it uses less digits than its factorization.

391296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1024 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 391296 is about 625.5365696744. The cubic root of 391296 is about 73.1422758510.

The spelling of 391296 in words is "three hundred ninety-one thousand, two hundred ninety-six".