21410152 has 8 divisors (see below), whose sum is σ = 40144050. Its totient is φ = 10705072.

The previous prime is 21410143. The next prime is 21410153. The reversal of 21410152 is 25101412.

It can be written as a sum of positive squares in only one way, i.e., 20124196 + 1285956 = 4486^2 + 1134^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21410153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1338127 + ... + 1338142.

Almost surely, 2^21410152 is an apocalyptic number.

It is an amenable number.

21410152 is a deficient number, since it is larger than the sum of its proper divisors (18733898).

21410152 is a wasteful number, since it uses less digits than its factorization.

21410152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676275 (or 2676271 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 21410152 is about 4627.1105454700. The cubic root of 21410152 is about 277.6770052713.

Adding to 21410152 its reverse (25101412), we get a palindrome (46511564).

The spelling of 21410152 in words is "twenty-one million, four hundred ten thousand, one hundred fifty-two".