21352010 has 32 divisors (see below), whose sum is σ = 40867200. Its totient is φ = 8009280.

The previous prime is 21352007. The next prime is 21352031. The reversal of 21352010 is 1025312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20195 + ... + 21225.

It is an arithmetic number, because the mean of its divisors is an integer number (1277100).

Almost surely, 2^21352010 is an apocalyptic number.

21352010 is a deficient number, since it is larger than the sum of its proper divisors (19515190).

21352010 is a wasteful number, since it uses less digits than its factorization.

21352010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 21352010 is about 4620.8235196770. The cubic root of 21352010 is about 277.4254216167.

Adding to 21352010 its reverse (1025312), we get a palindrome (22377322).

The spelling of 21352010 in words is "twenty-one million, three hundred fifty-two thousand, ten".