21062152 has 16 divisors (see below), whose sum is σ = 39543660. Its totient is φ = 10517184.

The previous prime is 21062137. The next prime is 21062159. The reversal of 21062152 is 25126012.

It can be written as a sum of positive squares in 2 ways, for example, as 16924996 + 4137156 = 4114^2 + 2034^2 .

It is a super-2 number, since 2×21062152² = 887228493742208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21062159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7758 + ... + 10114.

Almost surely, 2^21062152 is an apocalyptic number.

It is an amenable number.

21062152 is a deficient number, since it is larger than the sum of its proper divisors (18481508).

21062152 is a wasteful number, since it uses less digits than its factorization.

21062152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480 (or 3476 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 21062152 is about 4589.3520239790. The cubic root of 21062152 is about 276.1643283817.

Adding to 21062152 its reverse (25126012), we get a palindrome (46188164).

The spelling of 21062152 in words is "twenty-one million, sixty-two thousand, one hundred fifty-two".