21036350 has 48 divisors (see below), whose sum is σ = 40966128. Its totient is φ = 8029440.

The previous prime is 21036347. The next prime is 21036371. The reversal of 21036350 is 5363012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153482 + ... + 153618.

It is an arithmetic number, because the mean of its divisors is an integer number (853461).

Almost surely, 2^21036350 is an apocalyptic number.

21036350 is a deficient number, since it is larger than the sum of its proper divisors (19929778).

21036350 is a wasteful number, since it uses less digits than its factorization.

21036350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 21036350 is about 4586.5400903077. The cubic root of 21036350 is about 276.0515114245.

Adding to 21036350 its reverse (5363012), we get a palindrome (26399362).

The spelling of 21036350 in words is "twenty-one million, thirty-six thousand, three hundred fifty".