21486035 has 4 divisors (see below), whose sum is σ = 25783248. Its totient is φ = 17188824.

The previous prime is 21486001. The next prime is 21486043. The reversal of 21486035 is 53068412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21486035 - 2¹⁰ = 21485011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21485989 and 21486007.

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, 2148599 + ... + 2148608.

It is an arithmetic number, because the mean of its divisors is an integer number (6445812).

Almost surely, 2^21486035 is an apocalyptic number.

21486035 is a deficient number, since it is larger than the sum of its proper divisors (4297213).

21486035 is an equidigital number, since it uses as much as digits as its factorization.

21486035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4297212.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 21486035 is about 4635.3031184595. The cubic root of 21486035 is about 278.0046710048.

The spelling of 21486035 in words is "twenty-one million, four hundred eighty-six thousand, thirty-five".