21462234 has 16 divisors (see below), whose sum is σ = 43210560. Its totient is φ = 7106400.

The previous prime is 21462227. The next prime is 21462239. The reversal of 21462234 is 43226412.

It is not an unprimeable number, because it can be changed into a prime (21462239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10939 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (2700660).

Almost surely, 2^21462234 is an apocalyptic number.

21462234 is an abundant number, since it is smaller than the sum of its proper divisors (21748326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21462234 is a wasteful number, since it uses less digits than its factorization.

21462234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23845.

The product of its digits is 2304, while the sum is 24.

The square root of 21462234 is about 4632.7350453053. The cubic root of 21462234 is about 277.9019805221.

Adding to 21462234 its reverse (43226412), we get a palindrome (64688646).

The spelling of 21462234 in words is "twenty-one million, four hundred sixty-two thousand, two hundred thirty-four".