21014084 has 24 divisors (see below), whose sum is σ = 45261888. Its totient is φ = 8313120.

The previous prime is 21014069. The next prime is 21014087. The reversal of 21014084 is 48041012.

It is not an unprimeable number, because it can be changed into a prime (21014087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28502 + ... + 29229.

It is an arithmetic number, because the mean of its divisors is an integer number (1885912).

Almost surely, 2^21014084 is an apocalyptic number.

It is an amenable number.

21014084 is an abundant number, since it is smaller than the sum of its proper divisors (24247804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21014084 is a wasteful number, since it uses less digits than its factorization.

21014084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57755 (or 57753 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 21014084 is about 4584.1121277735. The cubic root of 21014084 is about 275.9540811376.

Adding to 21014084 its reverse (48041012), we get a palindrome (69055096).

The spelling of 21014084 in words is "twenty-one million, fourteen thousand, eighty-four".