21895962 has 32 divisors (see below), whose sum is σ = 48591360. Its totient is φ = 6521520.

The previous prime is 21895933. The next prime is 21895969. The reversal of 21895962 is 26959812.

It is not an unprimeable number, because it can be changed into a prime (21895969) 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, 1083 + ... + 6705.

It is an arithmetic number, because the mean of its divisors is an integer number (1518480).

Almost surely, 2^21895962 is an apocalyptic number.

21895962 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21895962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24295680).

21895962 is an abundant number, since it is smaller than the sum of its proper divisors (26695398).

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

21895962 is a wasteful number, since it uses less digits than its factorization.

21895962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698.

The product of its digits is 77760, while the sum is 42.

The square root of 21895962 is about 4679.3121289352. The cubic root of 21895962 is about 279.7615401725.

The spelling of 21895962 in words is "twenty-one million, eight hundred ninety-five thousand, nine hundred sixty-two".