21460006 has 12 divisors (see below), whose sum is σ = 33974532. Its totient is φ = 10164924.

The previous prime is 21460003. The next prime is 21460007. The reversal of 21460006 is 60006412.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21460003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14140 + ... + 15583.

It is an arithmetic number, because the mean of its divisors is an integer number (2831211).

Almost surely, 2^21460006 is an apocalyptic number.

21460006 is a deficient number, since it is larger than the sum of its proper divisors (12514526).

21460006 is a wasteful number, since it uses less digits than its factorization.

21460006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29763 (or 29744 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 21460006 is about 4632.4945763595. The cubic root of 21460006 is about 277.8923638308.

Adding to 21460006 its reverse (60006412), we get a palindrome (81466418).

The spelling of 21460006 in words is "twenty-one million, four hundred sixty thousand, six".