21106496 has 14 divisors (see below), whose sum is σ = 41883330. Its totient is φ = 10553216.

The previous prime is 21106471. The next prime is 21106523. The reversal of 21106496 is 69460112.

It can be written as a sum of positive squares in only one way, i.e., 17106496 + 4000000 = 4136^2 + 2000^2 .

It is a super-3 number, since 3×21106496³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164831 + ... + 164958.

Almost surely, 2^21106496 is an apocalyptic number.

It is an amenable number.

21106496 is a deficient number, since it is larger than the sum of its proper divisors (20776834).

21106496 is an equidigital number, since it uses as much as digits as its factorization.

21106496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329801 (or 329791 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 21106496 is about 4594.1806668872. The cubic root of 21106496 is about 276.3580035367.

The spelling of 21106496 in words is "twenty-one million, one hundred six thousand, four hundred ninety-six".