21361462 has 4 divisors (see below), whose sum is σ = 32042196. Its totient is φ = 10680730.

The previous prime is 21361447. The next prime is 21361463. The reversal of 21361462 is 26416312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21361463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5340364 + ... + 5340367.

It is an arithmetic number, because the mean of its divisors is an integer number (8010549).

Almost surely, 2^21361462 is an apocalyptic number.

21361462 is a deficient number, since it is larger than the sum of its proper divisors (10680734).

21361462 is a wasteful number, since it uses less digits than its factorization.

21361462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680733.

The product of its digits is 1728, while the sum is 25.

The square root of 21361462 is about 4621.8461679290. The cubic root of 21361462 is about 277.4663520060.

Adding to 21361462 its reverse (26416312), we get a palindrome (47777774).

The spelling of 21361462 in words is "twenty-one million, three hundred sixty-one thousand, four hundred sixty-two".