21013462 has 16 divisors (see below), whose sum is σ = 33603552. Its totient is φ = 9820800.

The previous prime is 21013459. The next prime is 21013483. The reversal of 21013462 is 26431012.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3088 + ... + 7180.

It is an arithmetic number, because the mean of its divisors is an integer number (2100222).

Almost surely, 2^21013462 is an apocalyptic number.

21013462 is a deficient number, since it is larger than the sum of its proper divisors (12590090).

21013462 is a wasteful number, since it uses less digits than its factorization.

21013462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 21013462 is about 4584.0442842538. The cubic root of 21013462 is about 275.9513584378.

Adding to 21013462 its reverse (26431012), we get a palindrome (47444474).

The spelling of 21013462 in words is "twenty-one million, thirteen thousand, four hundred sixty-two".