11423520 has 72 divisors (see below), whose sum is σ = 38987676. Its totient is φ = 3045888.

The previous prime is 11423501. The next prime is 11423537. The reversal of 11423520 is 2532411.

11423520 is a `hidden beast` number, since 1 + 142 + 3 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11048976 + 374544 = 3324^2 + 612^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11423493 and 11423502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2527 + ... + 5406.

Almost surely, 2^11423520 is an apocalyptic number.

11423520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11423520 is an abundant number, since it is smaller than the sum of its proper divisors (27564156).

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

11423520 is a wasteful number, since it uses less digits than its factorization.

11423520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954 (or 7943 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 11423520 is about 3379.8698199783. The cubic root of 11423520 is about 225.2163844271.

Adding to 11423520 its reverse (2532411), we get a palindrome (13955931).

The spelling of 11423520 in words is "eleven million, four hundred twenty-three thousand, five hundred twenty".