11928840 has 128 divisors (see below), whose sum is σ = 44651520. Its totient is φ = 2476800.

The previous prime is 11928821. The next prime is 11928853. The reversal of 11928840 is 4882911.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8595 + ... + 9885.

It is an arithmetic number, because the mean of its divisors is an integer number (348840).

Almost surely, 2^11928840 is an apocalyptic number.

11928840 is a gapful number since it is divisible by the number (10) 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 11928840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22325760).

11928840 is an abundant number, since it is smaller than the sum of its proper divisors (32722680).

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

11928840 is a wasteful number, since it uses less digits than its factorization.

11928840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 11928840 is about 3453.8152816849. The cubic root of 11928840 is about 228.4894073267.

The spelling of 11928840 in words is "eleven million, nine hundred twenty-eight thousand, eight hundred forty".