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22742220154 = 2131157954973
BaseRepresentation
bin10101001011100010…
…101011110101111010
32011200221111111010011
4111023202223311322
5333034002021104
614240404412134
71433400452563
oct251342536572
964627444104
1022742220154
119710432675
1244a83a704a
1321b5854604
14115a58916a
158d1890904
hex54b8abd7a

22742220154 has 16 divisors (see below), whose sum is σ = 34396132320. Its totient is φ = 11276956080.

The previous prime is 22742220139. The next prime is 22742220211. The reversal of 22742220154 is 45102224722.

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, 386212 + ... + 441184.

It is an arithmetic number, because the mean of its divisors is an integer number (2149758270).

Almost surely, 222742220154 is an apocalyptic number.

22742220154 is a deficient number, since it is larger than the sum of its proper divisors (11653912166).

22742220154 is a wasteful number, since it uses less digits than its factorization.

22742220154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56685.

The product of its (nonzero) digits is 17920, while the sum is 31.

Adding to 22742220154 its reverse (45102224722), we get a palindrome (67844444876).

The spelling of 22742220154 in words is "twenty-two billion, seven hundred forty-two million, two hundred twenty thousand, one hundred fifty-four".

Divisors: 1 2 131 262 1579 3158 54973 109946 206849 413698 7201463 14402926 86802367 173604734 11371110077 22742220154