21452362 has 4 divisors (see below), whose sum is σ = 32178546. Its totient is φ = 10726180.

The previous prime is 21452357. The next prime is 21452363. The reversal of 21452362 is 26325412.

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

It can be written as a sum of positive squares in only one way, i.e., 19811401 + 1640961 = 4451^2 + 1281^2 .

It is not an unprimeable number, because it can be changed into a prime (21452363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5363089 + ... + 5363092.

Almost surely, 2^21452362 is an apocalyptic number.

21452362 is a deficient number, since it is larger than the sum of its proper divisors (10726184).

21452362 is a wasteful number, since it uses less digits than its factorization.

21452362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10726183.

The product of its digits is 2880, while the sum is 25.

The square root of 21452362 is about 4631.6694614361. The cubic root of 21452362 is about 277.8593650595.

Adding to 21452362 its reverse (26325412), we get a palindrome (47777774).

The spelling of 21452362 in words is "twenty-one million, four hundred fifty-two thousand, three hundred sixty-two".