21062000 has 40 divisors (see below), whose sum is σ = 50932752. Its totient is φ = 8424000.

The previous prime is 21061981. The next prime is 21062003. The reversal of 21062000 is 26012.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21062003) 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, 3266 + ... + 7265.

Almost surely, 2^21062000 is an apocalyptic number.

21062000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21062000 is an abundant number, since it is smaller than the sum of its proper divisors (29870752).

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

21062000 is a wasteful number, since it uses less digits than its factorization.

21062000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10554 (or 10538 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 21062000 is about 4589.3354638771. The cubic root of 21062000 is about 276.1636640450.

Adding to 21062000 its reverse (26012), we get a palindrome (21088012).

The spelling of 21062000 in words is "twenty-one million, sixty-two thousand".