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22998164 = 2273779281
BaseRepresentation
bin101011110111…
…0110010010100
31121021102112212
41113232302110
521341420124
62140532552
7366324020
oct127566224
947242485
1022998164
1111a88952
127851158
1349c2ca7
1430a9380
15204440e
hex15eec94

22998164 has 48 divisors (see below), whose sum is σ = 48007680. Its totient is φ = 9434880.

The previous prime is 22998133. The next prime is 22998169. The reversal of 22998164 is 46189922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22998169) 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, 81704 + ... + 81984.

It is an arithmetic number, because the mean of its divisors is an integer number (1000160).

Almost surely, 222998164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22998164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24003840).

22998164 is an abundant number, since it is smaller than the sum of its proper divisors (25009516).

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

22998164 is a wasteful number, since it uses less digits than its factorization.

22998164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 406 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 22998164 is about 4795.6401032605. The cubic root of 22998164 is about 284.3791306247.

The spelling of 22998164 in words is "twenty-two million, nine hundred ninety-eight thousand, one hundred sixty-four".

Divisors: 1 2 4 7 14 28 37 74 79 148 158 259 281 316 518 553 562 1036 1106 1124 1967 2212 2923 3934 5846 7868 10397 11692 20461 20794 22199 40922 41588 44398 72779 81844 88796 145558 155393 291116 310786 621572 821363 1642726 3285452 5749541 11499082 22998164