220120984 has 8 divisors (see below), whose sum is σ = 412726860. Its totient is φ = 110060488.

The previous prime is 220120973. The next prime is 220120993. The reversal of 220120984 is 489021022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13757554 + ... + 13757569.

Almost surely, 2^220120984 is an apocalyptic number.

It is an amenable number.

220120984 is a deficient number, since it is larger than the sum of its proper divisors (192605876).

220120984 is a wasteful number, since it uses less digits than its factorization.

220120984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27515129 (or 27515125 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 220120984 is about 14836.4747834518. The cubic root of 220120984 is about 603.7917136298.

The spelling of 220120984 in words is "two hundred twenty million, one hundred twenty thousand, nine hundred eighty-four".