11281864 has 16 divisors (see below), whose sum is σ = 23076720. Its totient is φ = 5128080.

The previous prime is 11281859. The next prime is 11281871. The reversal of 11281864 is 46818211.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64014 + ... + 64189.

It is an arithmetic number, because the mean of its divisors is an integer number (1442295).

Almost surely, 2^11281864 is an apocalyptic number.

It is an amenable number.

11281864 is an abundant number, since it is smaller than the sum of its proper divisors (11794856).

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

11281864 is a wasteful number, since it uses less digits than its factorization.

11281864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128220 (or 128216 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 11281864 is about 3358.8486122480. The cubic root of 11281864 is about 224.2815867749.

It can be divided in two parts, 1128 and 1864, that added together give a palindrome (2992).

The spelling of 11281864 in words is "eleven million, two hundred eighty-one thousand, eight hundred sixty-four".