21476012 has 12 divisors (see below), whose sum is σ = 37791936. Its totient is φ = 10678320.

The previous prime is 21476011. The next prime is 21476017. The reversal of 21476012 is 21067412.

It is a super-2 number, since 2×21476012² = 922438182848288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21476011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14108 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (3149328).

Almost surely, 2^21476012 is an apocalyptic number.

It is an amenable number.

21476012 is a deficient number, since it is larger than the sum of its proper divisors (16315924).

21476012 is a wasteful number, since it uses less digits than its factorization.

21476012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29848 (or 29846 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 21476012 is about 4634.2218332747. The cubic root of 21476012 is about 277.9614355698.

The spelling of 21476012 in words is "twenty-one million, four hundred seventy-six thousand, twelve".