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22557422454 = 2372323351369
BaseRepresentation
bin10101000000100001…
…101111001101110110
32011020001202210022220
4111000201233031312
5332144200004304
614210203503210
71425664633020
oct250041571566
964201683286
1022557422454
1196260933a6
124456527b06
132186490a68
14113dc03010
158c053aad9
hex54086f376

22557422454 has 32 divisors (see below), whose sum is σ = 53801556480. Its totient is φ = 6164761152.

The previous prime is 22557422443. The next prime is 22557422483. The reversal of 22557422454 is 45422475522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11674719 + ... + 11676650.

It is an arithmetic number, because the mean of its divisors is an integer number (1681298640).

Almost surely, 222557422454 is an apocalyptic number.

22557422454 is an abundant number, since it is smaller than the sum of its proper divisors (31244134026).

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

22557422454 is a wasteful number, since it uses less digits than its factorization.

22557422454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23351404.

The product of its digits is 896000, while the sum is 42.

Adding to 22557422454 its reverse (45422475522), we get a palindrome (67979897976).

The spelling of 22557422454 in words is "twenty-two billion, five hundred fifty-seven million, four hundred twenty-two thousand, four hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 23 42 46 69 138 161 322 483 966 23351369 46702738 70054107 140108214 163459583 326919166 490378749 537081487 980757498 1074162974 1611244461 3222488922 3759570409 7519140818 11278711227 22557422454