21032676 has 96 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 5860512.

The previous prime is 21032659. The next prime is 21032699. The reversal of 21032676 is 67623012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32185 + ... + 32831.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^21032676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21032676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31933440).

21032676 is an abundant number, since it is smaller than the sum of its proper divisors (42834204).

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

21032676 is a wasteful number, since it uses less digits than its factorization.

21032676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 21032676 is about 4586.1395530446. The cubic root of 21032676 is about 276.0354396836.

Adding to 21032676 its reverse (67623012), we get a palindrome (88655688).

The spelling of 21032676 in words is "twenty-one million, thirty-two thousand, six hundred seventy-six".