Search a number
-
+
2220927980 = 225111046399
BaseRepresentation
bin1000010001100000…
…1010101111101100
312201210001211102212
42010120022233230
514022024143410
61004214105552
7106015401455
oct20430125754
95653054385
102220927980
11a3a724077
1251b94b2b8
1329517b28b
14170d6812c
15ceea2b05
hex8460abec

2220927980 has 12 divisors (see below), whose sum is σ = 4663948800. Its totient is φ = 888371184.

The previous prime is 2220927901. The next prime is 2220928037. The reversal of 2220927980 is 897290222.

It is a happy number.

It is a hoax number, since the sum of its digits (41) 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 3 ways as a sum of consecutive naturals, for example, 55523180 + ... + 55523219.

It is an arithmetic number, because the mean of its divisors is an integer number (388662400).

Almost surely, 22220927980 is an apocalyptic number.

2220927980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220927980 is an abundant number, since it is smaller than the sum of its proper divisors (2443020820).

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

2220927980 is a wasteful number, since it uses less digits than its factorization.

2220927980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111046408 (or 111046406 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 2220927980 is about 47126.7225679868. The cubic root of 2220927980 is about 1304.7024918415.

The spelling of 2220927980 in words is "two billion, two hundred twenty million, nine hundred twenty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 111046399 222092798 444185596 555231995 1110463990 2220927980