21076350 has 48 divisors (see below), whose sum is σ = 53032320. Its totient is φ = 5538400.

The previous prime is 21076343. The next prime is 21076361. The reversal of 21076350 is 5367012.

It is a self number, because there is not a number n which added to its sum of digits gives 21076350.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9661 + ... + 11639.

It is an arithmetic number, because the mean of its divisors is an integer number (1104840).

Almost surely, 2^21076350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21076350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26516160).

21076350 is an abundant number, since it is smaller than the sum of its proper divisors (31955970).

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

21076350 is a wasteful number, since it uses less digits than its factorization.

21076350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 21076350 is about 4590.8986048485. The cubic root of 21076350 is about 276.2263685825.

The spelling of 21076350 in words is "twenty-one million, seventy-six thousand, three hundred fifty".