21234010 has 32 divisors (see below), whose sum is σ = 43972992. Its totient is φ = 7231680.

The previous prime is 21234007. The next prime is 21234011. The reversal of 21234010 is 1043212.

It is not an unprimeable number, because it can be changed into a prime (21234011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10480 + ... + 12340.

It is an arithmetic number, because the mean of its divisors is an integer number (1374156).

Almost surely, 2^21234010 is an apocalyptic number.

21234010 is an abundant number, since it is smaller than the sum of its proper divisors (22738982).

21234010 is a wasteful number, since it uses less digits than its factorization.

21234010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21234010 is about 4608.0375432498. The cubic root of 21234010 is about 276.9134215730.

Adding to 21234010 its reverse (1043212), we get a palindrome (22277222).

The spelling of 21234010 in words is "twenty-one million, two hundred thirty-four thousand, ten".