11840521 has 16 divisors (see below), whose sum is σ = 14837760. Its totient is φ = 9179280.

The previous prime is 11840519. The next prime is 11840539. The reversal of 11840521 is 12504811.

It is not a de Polignac number, because 11840521 - 2¹ = 11840519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11840492 and 11840501.

It is not an unprimeable number, because it can be changed into a prime (11840581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28050 + ... + 28468.

It is an arithmetic number, because the mean of its divisors is an integer number (927360).

Almost surely, 2^11840521 is an apocalyptic number.

11840521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11840521 is a deficient number, since it is larger than the sum of its proper divisors (2997239).

11840521 is a wasteful number, since it uses less digits than its factorization.

11840521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 11840521 is about 3441.0058122590. The cubic root of 11840521 is about 227.9241116578.

The spelling of 11840521 in words is "eleven million, eight hundred forty thousand, five hundred twenty-one".