21083010 has 32 divisors (see below), whose sum is σ = 54492480. Its totient is φ = 5189568.

The previous prime is 21082981. The next prime is 21083017. The reversal of 21083010 is 1038012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (21083017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26640 + ... + 27419.

It is an arithmetic number, because the mean of its divisors is an integer number (1702890).

Almost surely, 2^21083010 is an apocalyptic number.

21083010 is an abundant number, since it is smaller than the sum of its proper divisors (33409470).

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

21083010 is a wasteful number, since it uses less digits than its factorization.

21083010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54082.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 21083010 is about 4591.6238957476. The cubic root of 21083010 is about 276.2554608095.

The spelling of 21083010 in words is "twenty-one million, eighty-three thousand, ten".