21880652 has 6 divisors (see below), whose sum is σ = 38291148. Its totient is φ = 10940324.

The previous prime is 21880643. The next prime is 21880657. The reversal of 21880652 is 25608812.

It is not an unprimeable number, because it can be changed into a prime (21880657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2735078 + ... + 2735085.

It is an arithmetic number, because the mean of its divisors is an integer number (6381858).

Almost surely, 2^21880652 is an apocalyptic number.

It is an amenable number.

21880652 is a deficient number, since it is larger than the sum of its proper divisors (16410496).

21880652 is a wasteful number, since it uses less digits than its factorization.

21880652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470167 (or 5470165 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 21880652 is about 4677.6759186588. The cubic root of 21880652 is about 279.6963204172.

The spelling of 21880652 in words is "twenty-one million, eight hundred eighty thousand, six hundred fifty-two".