11485840 has 20 divisors (see below), whose sum is σ = 26704764. Its totient is φ = 4594304.

The previous prime is 11485811. The next prime is 11485847. The reversal of 11485840 is 4858411.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 3283344 = 2864^2 + 1812^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (11485847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71707 + ... + 71866.

Almost surely, 2^11485840 is an apocalyptic number.

11485840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11485840 is an abundant number, since it is smaller than the sum of its proper divisors (15218924).

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

11485840 is a wasteful number, since it uses less digits than its factorization.

11485840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143586 (or 143580 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 11485840 is about 3389.0765703950. The cubic root of 11485840 is about 225.6251912583.

It can be divided in two parts, 1 and 1485840, that added together give a palindrome (1485841).

The spelling of 11485840 in words is "eleven million, four hundred eighty-five thousand, eight hundred forty".