11957958 has 12 divisors (see below), whose sum is σ = 25908948. Its totient is φ = 3985980.

The previous prime is 11957941. The next prime is 11957963. The reversal of 11957958 is 85975911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332148 + ... + 332183.

It is an arithmetic number, because the mean of its divisors is an integer number (2159079).

Almost surely, 2^11957958 is an apocalyptic number.

11957958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11957958 is an abundant number, since it is smaller than the sum of its proper divisors (13950990).

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

11957958 is a wasteful number, since it uses less digits than its factorization.

11957958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664339 (or 664336 counting only the distinct ones).

The product of its digits is 113400, while the sum is 45.

The square root of 11957958 is about 3458.0280507827. The cubic root of 11957958 is about 228.6751685714.

The spelling of 11957958 in words is "eleven million, nine hundred fifty-seven thousand, nine hundred fifty-eight".