20961484 has 24 divisors (see below), whose sum is σ = 39090240. Its totient is φ = 9806544.

The previous prime is 20961467. The next prime is 20961517. The reversal of 20961484 is 48416902.

It is a super-2 number, since 2×20961484² = 878767622964512, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4647 + ... + 7969.

It is an arithmetic number, because the mean of its divisors is an integer number (1628760).

Almost surely, 2^20961484 is an apocalyptic number.

It is an amenable number.

20961484 is a deficient number, since it is larger than the sum of its proper divisors (18128756).

20961484 is a wasteful number, since it uses less digits than its factorization.

20961484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429 (or 3427 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 20961484 is about 4578.3713261377. The cubic root of 20961484 is about 275.7236434236.

The spelling of 20961484 in words is "twenty million, nine hundred sixty-one thousand, four hundred eighty-four".