20961282 has 8 divisors (see below), whose sum is σ = 41922576. Its totient is φ = 6987092.

The previous prime is 20961263. The next prime is 20961299. The reversal of 20961282 is 28216902.

It is a sphenic number, since it is the product of 3 distinct primes.

20961282 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1746768 + ... + 1746779.

It is an arithmetic number, because the mean of its divisors is an integer number (5240322).

Almost surely, 2^20961282 is an apocalyptic number.

20961282 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20961282 is a wasteful number, since it uses less digits than its factorization.

20961282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493552.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20961282 is about 4578.3492658381. The cubic root of 20961282 is about 275.7227577300.

The spelling of 20961282 in words is "twenty million, nine hundred sixty-one thousand, two hundred eighty-two".