11897040 has 80 divisors (see below), whose sum is σ = 38836800. Its totient is φ = 3004416.

The previous prime is 11896999. The next prime is 11897051. The reversal of 11897040 is 4079811.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11896989 and 11897007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3256 + ... + 5864.

It is an arithmetic number, because the mean of its divisors is an integer number (485460).

Almost surely, 2^11897040 is an apocalyptic number.

11897040 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 11897040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19418400).

11897040 is an abundant number, since it is smaller than the sum of its proper divisors (26939760).

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

11897040 is a wasteful number, since it uses less digits than its factorization.

11897040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644 (or 2638 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 11897040 is about 3449.2086048832. The cubic root of 11897040 is about 228.2861903253.

The spelling of 11897040 in words is "eleven million, eight hundred ninety-seven thousand, forty".