21041350 has 48 divisors (see below), whose sum is σ = 43407936. Its totient is φ = 7524000.

The previous prime is 21041309. The next prime is 21041353. The reversal of 21041350 is 5314012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36565 + ... + 37135.

It is an arithmetic number, because the mean of its divisors is an integer number (904332).

Almost surely, 2^21041350 is an apocalyptic number.

21041350 is an abundant number, since it is smaller than the sum of its proper divisors (22366586).

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

21041350 is a wasteful number, since it uses less digits than its factorization.

21041350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 21041350 is about 4587.0851311045. The cubic root of 21041350 is about 276.0733806844.

Adding to 21041350 its reverse (5314012), we get a palindrome (26355362).

The spelling of 21041350 in words is "twenty-one million, forty-one thousand, three hundred fifty".