21470062 has 4 divisors (see below), whose sum is σ = 32205096. Its totient is φ = 10735030.

The previous prime is 21470047. The next prime is 21470069. The reversal of 21470062 is 26007412.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21470069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5367514 + ... + 5367517.

It is an arithmetic number, because the mean of its divisors is an integer number (8051274).

Almost surely, 2^21470062 is an apocalyptic number.

21470062 is a deficient number, since it is larger than the sum of its proper divisors (10735034).

21470062 is a wasteful number, since it uses less digits than its factorization.

21470062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735033.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 21470062 is about 4633.5798255776. The cubic root of 21470062 is about 277.9357631544.

Adding to 21470062 its reverse (26007412), we get a palindrome (47477474).

The spelling of 21470062 in words is "twenty-one million, four hundred seventy thousand, sixty-two".