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2212057880 = 23555301447
BaseRepresentation
bin1000001111011001…
…0101001100011000
312201011101011221122
42003312111030120
514012241323010
61003300024412
7105550116224
oct20366251430
95634334848
102212057880
11a3571590a
12518992108
13293393ab6
1416dad9784
15ce2ee855
hex83d95318

2212057880 has 16 divisors (see below), whose sum is σ = 4977130320. Its totient is φ = 884823136.

The previous prime is 2212057877. The next prime is 2212057927. The reversal of 2212057880 is 887502122.

It is a self number, because there is not a number n which added to its sum of digits gives 2212057880.

It is a congruent 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, 27650684 + ... + 27650763.

It is an arithmetic number, because the mean of its divisors is an integer number (311070645).

Almost surely, 22212057880 is an apocalyptic number.

2212057880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212057880 is an abundant number, since it is smaller than the sum of its proper divisors (2765072440).

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

2212057880 is a wasteful number, since it uses less digits than its factorization.

2212057880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55301458 (or 55301454 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 2212057880 is about 47032.5193881850. The cubic root of 2212057880 is about 1302.9632364844.

The spelling of 2212057880 in words is "two billion, two hundred twelve million, fifty-seven thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 55301447 110602894 221205788 276507235 442411576 553014470 1106028940 2212057880