21041032 has 8 divisors (see below), whose sum is σ = 39451950. Its totient is φ = 10520512.

The previous prime is 21041029. The next prime is 21041047. The reversal of 21041032 is 23014012.

It can be written as a sum of positive squares in only one way, i.e., 12432676 + 8608356 = 3526^2 + 2934^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315057 + ... + 1315072.

Almost surely, 2^21041032 is an apocalyptic number.

It is an amenable number.

21041032 is a deficient number, since it is larger than the sum of its proper divisors (18410918).

21041032 is a wasteful number, since it uses less digits than its factorization.

21041032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630135 (or 2630131 counting only the distinct ones).

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

The square root of 21041032 is about 4587.0504684383. The cubic root of 21041032 is about 276.0719899027.

Adding to 21041032 its reverse (23014012), we get a palindrome (44055044).

It can be divided in two parts, 2104 and 1032, that added together give a square (3136 = 56²).

The spelling of 21041032 in words is "twenty-one million, forty-one thousand, thirty-two".