11661948 has 24 divisors (see below), whose sum is σ = 30234960. Its totient is φ = 3887280.

The previous prime is 11661911. The next prime is 11661959. The reversal of 11661948 is 84916611.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 53883 + ... + 54098.

It is an arithmetic number, because the mean of its divisors is an integer number (1259790).

Almost surely, 2^11661948 is an apocalyptic number.

11661948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11661948 is an abundant number, since it is smaller than the sum of its proper divisors (18573012).

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

11661948 is a wasteful number, since it uses less digits than its factorization.

11661948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107994 (or 107986 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 11661948 is about 3414.9594433902. The cubic root of 11661948 is about 226.7724890345.

The spelling of 11661948 in words is "eleven million, six hundred sixty-one thousand, nine hundred forty-eight".