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2122055454 = 232913987739
BaseRepresentation
bin111111001111011…
…1111111100011110
312110220000120211110
41332132333330132
513321221233304
6550323002450
7103405113411
oct17636777436
95426016743
102122055454
11999932742
124b2809426
1327a840a1c
14161b8bb78
15c6472289
hex7e7bff1e

2122055454 has 32 divisors (see below), whose sum is σ = 4422096000. Its totient is φ = 678039264.

The previous prime is 2122055437. The next prime is 2122055459. The reversal of 2122055454 is 4545502212.

It is a super-2 number, since 2×21220554542 = 9006238699702292232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122055459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19684 + ... + 68055.

It is an arithmetic number, because the mean of its divisors is an integer number (138190500).

Almost surely, 22122055454 is an apocalyptic number.

2122055454 is an abundant number, since it is smaller than the sum of its proper divisors (2300040546).

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

2122055454 is a wasteful number, since it uses less digits than its factorization.

2122055454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87912.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2122055454 is about 46065.7731292985. The cubic root of 2122055454 is about 1285.0466967643.

Adding to 2122055454 its reverse (4545502212), we get a palindrome (6667557666).

The spelling of 2122055454 in words is "two billion, one hundred twenty-two million, fifty-five thousand, four hundred fifty-four".

Divisors: 1 2 3 6 29 58 87 139 174 278 417 834 4031 8062 12093 24186 87739 175478 263217 526434 2544431 5088862 7633293 12195721 15266586 24391442 36587163 73174326 353675909 707351818 1061027727 2122055454