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22988472 = 2331373681
BaseRepresentation
bin101011110110…
…0011010111000
31121020221020220
41113230122320
521341112342
62140420040
7366253533
oct127543270
947227226
1022988472
1111a81641
127847620
1349bb760
1430a5a1a
1520415ec
hex15ec6b8

22988472 has 32 divisors (see below), whose sum is σ = 61892880. Its totient is φ = 7073280.

The previous prime is 22988429. The next prime is 22988473. The reversal of 22988472 is 27488922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22988473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36529 + ... + 37152.

Almost surely, 222988472 is an apocalyptic number.

It is an amenable number.

22988472 is an abundant number, since it is smaller than the sum of its proper divisors (38904408).

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

22988472 is a wasteful number, since it uses less digits than its factorization.

22988472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73703 (or 73699 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 22988472 is about 4794.6294955919. The cubic root of 22988472 is about 284.3391768585.

The spelling of 22988472 in words is "twenty-two million, nine hundred eighty-eight thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 73681 147362 221043 294724 442086 589448 884172 957853 1768344 1915706 2873559 3831412 5747118 7662824 11494236 22988472